Custom activity

Hello everyone !

I’m trying to customize my buddypress activity loop, but I don’t really know where to put the code to do that. I have been trying to put it in bp-custom.php but some bp functions are not recognized and then I tried to change lines in budypress/bp-theme/bp-default/activity/activity-loop.php but no differences…

Should I put it somewhere in my hueman child theme ??

Thanks in advance