diff --git a/R/get_comland_data.R b/R/get_comland_data.R
index d108408..743c150 100644
--- a/R/get_comland_data.R
+++ b/R/get_comland_data.R
@@ -48,6 +48,22 @@
 #'@importFrom data.table ":="
 #'@importFrom magrittr "%>%"
 #'
+#'@section Argument choices:
+#'
+#'Some of the arguments rely on the choice of others.
+#'
+#'If \code{aggArea = T} then the user must also supply a \code{userAreas} data frame
+#' and a \code{areaDescription} string to denote the field in \code{userArea} which
+#' maps the statistical area to the larger spatial unit.
+#'
+#'If \code{aggGear = T} then the user must also supply a \code{userGears} data frame
+#' and a \code{fleetDescription} string to denote the field in \code{userGears} which
+#' maps the NEGEAR codes to the fleet designation.
+#'
+#' If either \code{aggArea = T} or \code{aggGear = T} and the user wants to assign values to
+#' missing variables (i.e. if \code{unkVar} != NULL) then \code{unkVar} and \code{knStrata} need to
+#' include the values of \code{areaDescription} and \code{fleetDescription} respectively
+#'
 #'@export
 
 
diff --git a/man/get_comland_data.Rd b/man/get_comland_data.Rd
index d1c44ca..53c2c14 100644
--- a/man/get_comland_data.Rd
+++ b/man/get_comland_data.Rd
@@ -94,3 +94,21 @@ skate and hake landings (often reported as an unclassified category) are split b
 and missing values are imputed. For more information regarding these methods
 see \code{vignette("Overview", package = "comlandr")}
 }
+\section{Argument choices}{
+
+
+Some of the arguments rely on the choice of others.
+
+If \code{aggArea = T} then the user must also supply a \code{userAreas} data frame
+and a \code{areaDescription} string to denote the field in \code{userArea} which
+maps the statistical area to the larger spatial unit.
+
+If \code{aggGear = T} then the user must also supply a \code{userGears} data frame
+and a \code{fleetDescription} string to denote the field in \code{userGears} which
+maps the NEGEAR codes to the fleet designation.
+
+If either \code{aggArea = T} or \code{aggGear = T} and the user wants to assign values to
+missing variables (i.e. if \code{unkVar} != NULL) then \code{unkVar} and \code{knStrata} need to
+include the values of \code{areaDescription} and \code{fleetDescription} respectively
+}
+