Meeting started from within the whiteboard: what is "n people are following you [stop]"?

[RL5]

Hello,

I start meetings from within whiteboards, which is a great zoom feature.

Immediately after the meeting starts, a red color message shows up at the top-middle of the window, telling me how many people are following me, for example:

   16 people are following you [stop] 

This seems the only dialog in Zoom that has a [stop] button, and I'm worried what happens when I click it. What does stop? Will it stop these people from following me? Or will the people be disconnected from my whiteboard? Or does it simply make the message go away?

I tried to search for help with the keywords "people are following you", but did not get any useful results.

I'm looking forward to an explanation from this forum.

Thank you.

-R.L.