thank you ver much for your work, that's really appreciated... :-)
I have installed the plugin, checked if enabled. Then go back to my List & search, find the group X field in List vue. Go on "2" for typographie but didn't find any "Count Group X" choise there, did I miss something ?
sorry, I made a small mistake packing the plugin, please use this version
Also, you need to reinstall Seblod, just install version you have already installed once more (do NOT uninstall existing one). First version of the plugin mistakenly installed in date type plugin folder, so this needs to be overwritten with the right files.