Gamemode spawn multiple clients?

I tried to do some networking practice, but got one thing I just can’t even though how to fix:

Because of somehow default pawn is spawned only for owner of a session - I came to a conclusion, that I need to spawn character for every session player manually. (But it is even right?)

Don’t know, if I did everything wrong, but here’s what happens when I run it:

113124-session2.png

It’s a “Controlled manually” check. How can you see, there is three clients “1” in my session, when it’s only two windows, and they also have different returns in check.

Note that sessions are used here, not default multiplayer.
What is wrong here? Is it some good tutorials or manuals on sessions?

Thanks.