Welcome! This forum has a treasure trove of great info – Scouters helping Scouters! Just a heads up, though - all content, information, and opinions shared on this forum are those of the author, not the BSA.
If your only position role with the troop is as an Assistant Scoutmaster, then I believe you do not have the permissions to enter Activity Logs for the troop.
If you are a parent of a Scout in the troop and you are not showing up on the troop’s roster in IA, then that is a separate issue and a bug that was reported earlier today:
