diff --git a/home/.chezmoiscripts/universal/run_onchange_before_20-ensure-user-group.sh.tmpl b/home/.chezmoiscripts/universal/run_onchange_before_20-ensure-user-group.sh.tmpl
index 532cd251..caadc0cc 100644
--- a/home/.chezmoiscripts/universal/run_onchange_before_20-ensure-user-group.sh.tmpl
+++ b/home/.chezmoiscripts/universal/run_onchange_before_20-ensure-user-group.sh.tmpl
@@ -9,6 +9,36 @@
 {{ includeTemplate "universal/logg-before" }}
 
 ### Ensure user has group of same name (required for Macports)
-logg info 'Ensuring user has a group with the same name and that it is a member. Sudo privileges may be required'
-echo y | sudo dseditgroup -o create "$USER" > /dev/null
+logg info "Ensuring user ($USER) has a group with the same name ($USER) and that it is a member. Sudo privileges may be required"
+
+GROUP="$USER"
+USERNAME="$USER"
+
+### Add group
+sudo dscl . create /Groups/$GROUP
+
+### Add GroupID to group
+if [[ "$(sudo dscl . read /Groups/$GROUP gid 2>&1)" == *'No such key'* ]]; then
+    MAX_ID_GROUP="$(dscl . -list /Groups gid | awk '{print $2}' | sort -ug | tail -1)"
+    GROUP_ID="$((MAX_ID_GROUP+1))"
+    sudo dscl . create /Groups/$GROUP gid "$GROUP_ID"
+fi
+
+### Add user
+sudo dscl . create /Users/$USERNAME
+
+### Add PrimaryGroupID to user
+if [[ "$(sudo dscl . read /Users/$USERNAME PrimaryGroupID 2>&1)" == *'No such key'* ]]; then
+    sudo dscl . create /Users/$USERNAME PrimaryGroupID 20
+fi
+
+### Add UniqueID to user
+if [[ "$(sudo dscl . read /Users/$USERNAME UniqueID 2>&1)" == *'No such key'* ]]; then
+    MAX_ID_USER="$(dscl . -list /Users UniqueID | awk '{print $2}' | sort -ug | tail -1)"
+    USER_ID="$((MAX_ID_USER+1))"
+    sudo dscl . create /Users/$USERNAME UniqueID "$USERID"
+fi
+
+### Add user to group
+sudo dseditgroup -o edit -t user -a $USERNAME $GROUP
 {{ end -}}
diff --git a/home/dot_local/bin/executable_install-program b/home/dot_local/bin/executable_install-program
index d1af9140..f51cc134 100644
--- a/home/dot_local/bin/executable_install-program
+++ b/home/dot_local/bin/executable_install-program
@@ -1501,15 +1501,21 @@ async function addUserGroup(group) {
   log('info', logStage, `Ensuring the ${group} group / user is added`)
   if (osType === 'linux') {
     const useradd = which.sync('useradd', { nothrow: true })
-    if (useradd) {
+    const usermod = which.sync('usermod', { nothrow: true })
+    if (useradd && usermod) {
       runCommand(`Adding the ${group} user / group`, `sudo useradd ${group}`)
+      runCommand(`Adding the ${process.env.USER} user to the ${group} group`, `sudo usermod -a -G ${group} ${process.env.USER}`)
     } else {
-      log('error', logStage, `The useradd command is unavailable`)
+      log('error', logStage, `The useradd and / or usermod command is unavailable`)
     }
   } else if (osType === 'darwin') {
-    runCommand(`Adding the ${group} group`, `sudo dscl . -create /Users/${group}`)
-    runCommand(`Creating the ${group} group`, `sudo dscl . -create /Groups/${group}`)
-    runCommand(`Adding the ${group} user to the ${group} group`, `sudo dscl . -append /Groups/${group} GroupMembership ${group}`)
+    runCommand(`Creating the ${group} group`, `sudo dscl . create /Groups/${group}`)
+    runCommand(`Ensuring the ${group} group has a GID`, `if [[ "$(sudo dscl . read /Groups/$GROUP gid 2>&1)" == *'No such key'* ]]; then MAX_ID_GROUP="$(dscl . -list /Groups gid | awk '{print $2}' | sort -ug | tail -1)"; GROUP_ID="$((MAX_ID_GROUP+1))"; sudo dscl . create /Groups/${group} gid "$GROUP_ID"; fi`)
+    runCommand(`Adding the ${group} user`, `sudo dscl . create /Users/${group}`)
+    runCommand(`Ensuring the ${group} user has a PrimaryGroupID`, `if [[ "$(sudo dscl . read /Users/${group} PrimaryGroupID 2>&1)" == *'No such key'* ]]; then sudo dscl . create /Users/${group} PrimaryGroupID 20; fi`)
+    runCommand(`Ensuring the ${group} user has a UniqueID`, `if [[ "$(sudo dscl . read /Users/${group} UniqueID 2>&1)" == *'No such key'* ]]; then MAX_ID_USER="$(dscl . -list /Users UniqueID | awk '{print $2}' | sort -ug | tail -1)"; USER_ID="$((MAX_ID_USER+1))"; sudo dscl . create /Users/${group} UniqueID "$USERID"; fi`)
+    runCommand(`Adding the ${group} user to the ${group} group`, `sudo dseditgroup -o edit -t user -a ${group} ${group}`)
+    runCommand(`Adding the ${process.env.USER} user to the ${group} group`, `sudo dseditgroup -o edit -t user -a ${process.env.USER} ${group}`)
   } else if (osType === 'windows') {
     log('warn', logStage, `Windows support not yet added`)
   } else {