To show Classifieds Ads in buddypress activity stream

Team,

1. Created bp-custom.php and added as what mentioned in the link:
https://premium.wpmudev.org/forums/topic/can-classifieds-be-integrated-so-that-they-appear-on-the-activity-stream

Uploaded bp-custom.php in plugins folder so that it loads before buddypress

created a test ad with classified. But that does not show in the activity stream of buddypress. Anything i am missing

2. also is it possible to have multisite where
site 1 - buddypress
site 2 - classifieds
site 3 - directory etc.,

where when users posts ads fro site 2, the ads can get displayed in activity stream of site1.

Regards
Aparna