There's no trigger output on category view to output something just before the groups. You'd need to alter the below template file and change how the trigger is handled.

/components/com_comprofiler/plugin/user/plug_cbgroupjive/templates/default/category.php

Suggest doing this in your own custom template folder as altering the defaults will result in your changes lost on update.

This should all be significantly improved in a later release once GJ is rewritten to provide a generalized Community API to support multiple isolated GJ instances (like how you can have multiple different streams in CB Activity) as I'll be redoing most/all of GJs triggers at that point.