diff --git a/CHANGELOG.md b/CHANGELOG.md
index 40be9fead..3668d4371 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,11 @@
 
 ## Unreleased
 
+### Change
+
+- **Technical User Management**
+  - enhanced UI of technical user management creation page
+
 ## 2.3.0-RC3
 
 ### Change
diff --git a/src/assets/locales/de/main.json b/src/assets/locales/de/main.json
index 50c8ba011..c3ffd8459 100644
--- a/src/assets/locales/de/main.json
+++ b/src/assets/locales/de/main.json
@@ -1097,9 +1097,11 @@
       "technicalUser": {
         "addOverlay": {
           "service": "Technical User Role",
-          "note": "<strong>Notiz:</strong> Die Auswahl sowohl interner als auch externer Benutzer für denselben Dienst ist nicht möglich.",
-          "internalRoles": "Interne Rollen:",
-          "externalRoles": "Externe Rollen:",
+          "note": "Notiz: Die Auswahl sowohl interner als auch externer Benutzer für denselben Dienst ist nicht möglich.",
+          "internalRoles": "Interner technischer Benutzer",
+          "internalRolesDescription": "Interne technische Benutzer werden in der direkten Umgebung des Portals erstellt und können daher mehrere Rollen haben",
+          "externalRoles": "Externer technischer Benutzer",
+          "externalRolesDescription": "Externe technische Benutzer werden in einer externen Umgebung erstellt und können daher nur eine Rolle haben",
           "username": "Username*",
           "description": "Beschreibung*",
           "spocHeadline": "Single Point of Contact (SPoC)",
diff --git a/src/assets/locales/en/main.json b/src/assets/locales/en/main.json
index 3d77fd040..e319838a9 100644
--- a/src/assets/locales/en/main.json
+++ b/src/assets/locales/en/main.json
@@ -1102,9 +1102,11 @@
       "technicalUser": {
         "addOverlay": {
           "service": "Technical User Role",
-          "note": "<strong>Note:</strong> Selection of both internal and external users for the same service is not possible.",
-          "internalRoles": "Internal Roles :",
-          "externalRoles": "External Roles :",
+          "note": "Note: Selection of both internal and external users for the same service is not possible.",
+          "internalRoles": "Internal technical user",
+          "internalRolesDescription": "Internal technical user are created in the direct environment of the portal therefore can have multiple roles",
+          "externalRoles": "External technical user",
+          "externalRolesDescription": "External technical user are created in external environment therefore can only have one role",
           "username": "Username*",
           "description": "Description*",
           "spocHeadline": "Single Point of Contact (SPoC)",
diff --git a/src/components/overlays/AddTechnicalUser/TechnicalUserAddForm.scss b/src/components/overlays/AddTechnicalUser/TechnicalUserAddForm.scss
index 4d2f7054a..1d2075c6f 100644
--- a/src/components/overlays/AddTechnicalUser/TechnicalUserAddForm.scss
+++ b/src/components/overlays/AddTechnicalUser/TechnicalUserAddForm.scss
@@ -40,3 +40,9 @@
     margin: -5px 27px 10px;
   }
 }
+
+.roles {
+  .MuiTypography-root {
+    font-size: 14px !important;
+  }
+}
diff --git a/src/components/overlays/AddTechnicalUser/TechnicalUserAddForm.tsx b/src/components/overlays/AddTechnicalUser/TechnicalUserAddForm.tsx
index 959e9f0f3..26bd291b0 100644
--- a/src/components/overlays/AddTechnicalUser/TechnicalUserAddForm.tsx
+++ b/src/components/overlays/AddTechnicalUser/TechnicalUserAddForm.tsx
@@ -18,7 +18,7 @@
  * SPDX-License-Identifier: Apache-2.0
  ********************************************************************************/
 
-import { useState } from 'react'
+import { useEffect, useState } from 'react'
 import Box from '@mui/material/Box'
 import { Trans, useTranslation } from 'react-i18next'
 import InputLabel from '@mui/material/InputLabel'
@@ -82,6 +82,11 @@ export type FormAddType = {
   limit?: number
 }
 
+enum RoleType {
+  Internal = 'Internal',
+  External = 'External',
+}
+
 const TechnicalUserAddFormSelect = ({
   control,
   trigger,
@@ -91,10 +96,21 @@ const TechnicalUserAddFormSelect = ({
 }: FormSelectType) => {
   const { t } = useTranslation()
   const roles = useFetchServiceAccountRolesQuery().data
-  const internalRoles = roles?.filter((role) => role.roleType === 'Internal')
-  const externalRoles = roles?.filter((role) => role.roleType === 'External')
+  const internalRoles = roles?.filter(
+    (role) => role.roleType === RoleType.Internal
+  )
+  const externalRoles = roles?.filter(
+    (role) => role.roleType === RoleType.External
+  )
   const [roleError, setRoleError] = useState<boolean>(false)
   const [selectedRoles, setSelectedRoles] = useState<string[]>([])
+  const [selectedRoleType, setSelectedRoleType] = useState<string>(
+    RoleType.Internal
+  )
+
+  useEffect(() => {
+    setSelectedRoles([])
+  }, [selectedRoleType])
 
   const selectCheckboxRoles = (role: string, select: boolean) => {
     if (selectedRoles && selectedRoles[0] === externalRoles?.[0].roleId) {
@@ -150,67 +166,100 @@ const TechnicalUserAddFormSelect = ({
             </Typography>
           </InputLabel>
           <Trans>
-            <Typography variant="body2">
+            <Typography variant="body2" sx={{ marginBottom: '10px' }}>
               {t('content.addUser.technicalUser.addOverlay.note')}
             </Typography>
           </Trans>
-          <Box sx={{ margin: '10px 0px' }}>
-            <Typography variant="body2" sx={{ fontWeight: 'bold' }}>
-              {t('content.addUser.technicalUser.addOverlay.internalRoles')}
-            </Typography>
-            {internalRoles?.map((role: ServiceAccountRole) => (
-              <>
-                <Checkbox
-                  key={role.roleId}
-                  label={role.roleName}
-                  checked={selectedRoles.indexOf(role.roleId) !== -1}
-                  onChange={(e) => {
-                    selectRoles(role.roleId, e.target.checked, 'checkbox')
-                    trigger(name)
-                    onChange(
-                      selectCheckboxOnChange(role.roleId, e.target.checked)
-                    )
-                  }}
-                  size="small"
-                  value={selectedRoles}
-                />
-                <Typography variant="body3" className="roleDescription">
-                  {role.roleDescription ?? '-'}
-                </Typography>
-              </>
-            ))}
+          <Box>
+            <Radio
+              label={t(
+                'content.addUser.technicalUser.addOverlay.internalRoles'
+              )}
+              checked={selectedRoleType === RoleType.Internal}
+              onChange={() => { setSelectedRoleType(RoleType.Internal) }}
+              name="radio-buttons"
+              value={selectedRoleType}
+              size="small"
+            />
+            <Box sx={{ pl: '28px' }}>
+              <Typography variant="body3" sx={{ marginBottom: '10px' }}>
+                {t(
+                  'content.addUser.technicalUser.addOverlay.internalRolesDescription'
+                )}
+              </Typography>
+              {internalRoles?.map((role: ServiceAccountRole) => (
+                <>
+                  <Box className="roles">
+                    <Checkbox
+                      key={role.roleId}
+                      label={role.roleName}
+                      checked={selectedRoles.indexOf(role.roleId) !== -1}
+                      onChange={(e) => {
+                        selectRoles(role.roleId, e.target.checked, 'checkbox')
+                        trigger(name)
+                        onChange(
+                          selectCheckboxOnChange(role.roleId, e.target.checked)
+                        )
+                      }}
+                      size="small"
+                      value={selectedRoles}
+                      disabled={selectedRoleType === RoleType.External}
+                    />
+                  </Box>
+                  <Typography variant="body3" className="roleDescription">
+                    {role.roleDescription ?? '-'}
+                  </Typography>
+                </>
+              ))}
+            </Box>
           </Box>
-          <Box sx={{ margin: '10px 0px' }}>
-            <Typography variant="body2" sx={{ fontWeight: 'bold' }}>
-              {t('content.addUser.technicalUser.addOverlay.externalRoles')}
-            </Typography>
-            {externalRoles?.map((role: ServiceAccountRole) => (
-              <>
-                <Radio
-                  label={role.roleName}
-                  key={role.roleId}
-                  checked={
-                    selectedRoles &&
-                    selectedRoles[0] === externalRoles?.[0].roleId
-                  }
-                  onChange={(e) => {
-                    selectRoles(role.roleId, e.target.checked, 'radio')
-                    trigger(name)
-                    onChange([...[], role.roleId])
-                  }}
-                  name="radio-buttons"
-                  value={selectedRoles}
-                  size="small"
-                />
-
-                <Typography variant="body3" className="roleDescription">
-                  {role.roleDescription ?? '-'}
-                </Typography>
-              </>
-            ))}
+          <Box>
+            <Radio
+              label={t(
+                'content.addUser.technicalUser.addOverlay.externalRoles'
+              )}
+              checked={selectedRoleType === RoleType.External}
+              onChange={() => { setSelectedRoleType(RoleType.External) }}
+              name="radio-buttons"
+              value={selectedRoleType}
+              size="small"
+            />
+            <Box sx={{ pl: '28px' }}>
+              <Typography variant="body2" sx={{ marginBottom: '10px' }}>
+                {t(
+                  'content.addUser.technicalUser.addOverlay.externalRolesDescription'
+                )}
+              </Typography>
+              {externalRoles?.map((role: ServiceAccountRole) => (
+                <>
+                  <Box className="roles">
+                    <Radio
+                      label={role.roleName}
+                      key={role.roleId}
+                      checked={
+                        selectedRoles &&
+                        selectedRoles[0] === externalRoles?.[0].roleId
+                      }
+                      onChange={(e) => {
+                        selectRoles(role.roleId, e.target.checked, 'radio')
+                        trigger(name)
+                        onChange([...[], role.roleId])
+                      }}
+                      name="radio-buttons"
+                      value={selectedRoles}
+                      size="small"
+                      disabled={selectedRoleType === RoleType.Internal}
+                    />
+                  </Box>
+                  <Typography variant="body3" className="roleDescription">
+                    {role.roleDescription ?? '-'}
+                  </Typography>
+                </>
+              ))}
+            </Box>
           </Box>
           {roleError && (
-            <Typography variant="body2" className="file-error-msg">
+            <Typography variant="body3" className="file-error-msg">
               {t('content.addUser.technicalUser.addOverlay.roleMandatory')}
             </Typography>
           )}