Can't find correct hook

[XLCR GODFATHER]

Please help I am writing a plugin to add some information to member profiles to show in the attached location but I can't find the correct hook. This area is shows for custom profile field categories and it appears that if you edit the memberinfo_block_profilefield template information will show but on every custom profile field category tab you click on. I cant find an existing variable to segregate the data so it only shows in 1 or the other category and I really am not sure how to establish my on variable for if a tab is clicked so I am probably going to merge the 2 categories into 1. I am running in debug mode on my test site but it gives a pretty big list. I have tried the ones that seem logical but no luck. Can anyone help me?
I have gotten other plugins to show where I want them by registering, rendering and caching templates but this one is driving me nuts...