Facebook groups pics?

[M3tz]

Hi,

In Facebook groups at the top most of the page appears about 8 profile pics for the group's members
I want to ask if these members appearing are just randomly put from time to time or is there any special thing to it (like the most one I give likes to or talk to the most or whatever) .. a reliable sources would be appreciated


Thank you :-)

[Sabine]

It's a random thing. I have observed this thing as I also manage a group. Observe that everyday, the pictures change, some profiles showing are active while some are not.