Describe by position, not by identity
The person on the left, the man in the red jacket. Position and clothing are what the model can act on.
Crowds are harder than one passer-by
A single person against a wall vanishes cleanly. A busy square needs several passes, each naming fewer people.
Say what has to stay
If someone must remain, name them. Everything you do not mention is at risk of being reinterpreted.
FAQ
Can it remove someone from a group photo?
Yes, but check the edges where they overlapped others. Overlaps are the hard part.
Is the result convincing?
On plain and natural backgrounds usually yes. Repeating architecture can need a second pass.
Should I use this on other people's photos?
Only if you have the right to edit them. Removing people from someone else's image can be misleading.