Please considor making your own plugin, and pair it with https://github.com/fedddddd/t6-gsc-utils for functions like setting clan tag, renaming, etc.
c# plugin for iw4m-admin that interacts with ClanTagRank to set the ClanTag of players, either by iw4m-admin permission level, or a custom one set with !setRank <player> <tag>.
(!sr) !setRank <player> <tag>
(!rr) !ResetRank <player>
by default, these require permission level Admin or above, this can be changed,
along with the command names and alias in ./Configuration/CommnadConfiguration.json
download the latest ClanTagRankCommands.dll from the releases page and place it in the Plugins folder of your iw4m-admin folder, and then head over to https://github.com/INSANEMODE/ClanTagRank and follow the instructions there.
You can change the default rank names in ./Configuration/ClanTagRankCommands.json
if you do not have it, make sure you are up to date, and you run iw4m-admin to generate the default Configuration.