diff --git a/overlay/etc/adduser.conf b/overlay/etc/adduser.conf
index 8bca3bf..47cc83b 100644
--- a/overlay/etc/adduser.conf
+++ b/overlay/etc/adduser.conf
@@ -49,11 +49,12 @@
 # created user will be given their own group to use as a default.  If
 # "no", each created user will be placed in the group whose gid is
 # USERS_GID (see below).
-#USERGROUPS=yes
+USERGROUPS=no
 
 # If USERGROUPS is "no", then USERS_GID should be the GID of the group
 # `users' (or the equivalent group) on your system.
-#USERS_GID=100
+# The et-data group should be set to 1981
+USERS_GID=1981
 
 # If DIR_MODE is set, directories will be created with the specified
 # mode. Otherwise the default mode 0755 will be used.
diff --git a/overlay/etc/environment b/overlay/etc/environment
index fdd8935..c844200 100644
--- a/overlay/etc/environment
+++ b/overlay/etc/environment
@@ -1,6 +1,5 @@
 ET_HOME=/opt/emcomm-tools
-ET_USER=games
-ET_GROUP=games
+ET_GROUP=et-data
 ET_TEMP_DIR=/tmp/et
 ET_LOG_FILE=$ET_TEMP_DIR/et.log
 ET_DIST_DIR=/opt/dist
diff --git a/overlay/etc/skel/.bash_profile b/overlay/etc/skel/.bash_profile
index 29166d1..432b489 100644
--- a/overlay/etc/skel/.bash_profile
+++ b/overlay/etc/skel/.bash_profile
@@ -1,7 +1,13 @@
 # Author      : Gaston Gonzalez
 # Date        : 23 April 2024
+# Updated     : 9 October 2024
 # Description : bash profile
 
+# All user accounts should be in the 'et-data' group to allow data sharing with
+# EmComm Tools. A umask of 002 is required to allow users and the system to
+# read and write shared data files.
+umask 002
+
 alias pbcopy='xsel --clipboard --input'
 alias pbpaste='xsel --clipboard --output'
 
diff --git a/overlay/opt/emcomm-tools/conf/radios.d/icom-ic705.json b/overlay/opt/emcomm-tools/conf/radios.d/icom-ic705.json
new file mode 100644
index 0000000..a5c8fb0
--- /dev/null
+++ b/overlay/opt/emcomm-tools/conf/radios.d/icom-ic705.json
@@ -0,0 +1,13 @@
+{
+  "id": "icom-ic705",
+  "vendor": "Icom",
+  "model": "IC-705",
+  "rigctrl": {
+    "id": "3085",
+    "baud": "9600",
+    "ptt": "RIG"
+  },
+  "notes": [
+    "Enable GPS: [MENU] > [SET] > [Connectors] > [USB (B) Function] > GPS Out = ON"
+  ]
+}
diff --git a/scripts/configure-user.sh b/scripts/configure-user.sh
index 785551c..5dc8d24 100755
--- a/scripts/configure-user.sh
+++ b/scripts/configure-user.sh
@@ -2,14 +2,18 @@
 #
 # Author  : Gaston Gonzalez
 # Date    : 16 March 2024
-# Updated : 1 October 2024
-# Purpose : Configure users
+# Updated : 9 October 2024
+# Purpose : Configure users and groups
 set -e
 
-et-log "Configuring users"
+et-log "Adding '${ET_GROUP}' group..."
+groupadd -g 1981  ${ET_GROUP} 
+
+et-log "Configuring users..."
 
 cp -r ../overlay/etc/skel /etc/
 [ ! -e /etc/skel/Desktop ] && mkdir /etc/skel/Desktop
 
-et-log "Add all users to dialout group"
+et-log "Add all users to dialout group..."
 cp -v -r ../overlay/etc/adduser.conf /etc/
+
diff --git a/scripts/env.sh b/scripts/env.sh
index d5a4636..55eacfa 100755
--- a/scripts/env.sh
+++ b/scripts/env.sh
@@ -6,8 +6,7 @@
 # Purpose : Global environment variables
 
 export ET_HOME=/opt/emcomm-tools
-export ET_USER=games
-export ET_GROUP=games
+export ET_GROUP=et-data
 export ET_TEMP_DIR=/tmp/et
 export ET_LOG_FILE=$ET_TEMP_DIR/et.log
 
diff --git a/scripts/fix-panasonic-brightness.sh b/scripts/fix-panasonic-brightness.sh
index c4e93cc..46c708f 100755
--- a/scripts/fix-panasonic-brightness.sh
+++ b/scripts/fix-panasonic-brightness.sh
@@ -2,22 +2,13 @@
 #
 # Author  : Gaston Gonzalez
 # Date    : 16 January 2023
-# Updated : 16 March 2024
+# Updated : 9 October 2024
 # Purpose : Fix screen brightness on Panasonic hardware
 
 et-log "Installing Panasonic brightness fix..."
 
 apt install inotify-tools -y
 
-if [ ! -e $ET_HOME/sbin ]; then
-  mkdir -v -p $ET_HOME/sbin
-  chown -v $ET_USER:$ET_GROUP $ET_HOME/sbin
-fi
-
-cp -v ../overlay/$ET_HOME/sbin/panasonic-set-brightness.sh $ET_HOME/sbin/
-chmod -v 755 $ET_HOME/sbin/panasonic-set-brightness.sh
-chown -v $ET_USER:$ET_GROUP $ET_HOME/sbin/*
-
 cp -v ../overlay/lib/systemd/system/panasonic-brightness.service /lib/systemd/system/
 
 systemctl daemon-reload
diff --git a/scripts/install-emcomm-tools.sh b/scripts/install-emcomm-tools.sh
index 1ce70cb..20cb349 100755
--- a/scripts/install-emcomm-tools.sh
+++ b/scripts/install-emcomm-tools.sh
@@ -2,6 +2,7 @@
 #
 # Author  : Gaston Gonzalez
 # Date    : 6 October 2024
+# Updated : 9 October 2024
 # Purpose : Install EmComm Tools applications
 
 et-log "Installing EmComm Tools applications..."
@@ -11,4 +12,8 @@ if [ ! -e $ET_HOME ]; then
 fi
 
 cp -v -r ../overlay/$ET_HOME/* $ET_HOME
-chown -v -R $ET_USER:$ET_GROUP $ET_HOME
+
+et-log "Setting up permission for shared data access..."
+chgrp -v -R $ET_GROUP $ET_HOME/conf/radios.d
+chmod -v 775 $ET_HOME/conf/radios.d
+chmod -v 664 $ET_HOME/conf/radios.d/*.json