rdr2 pc menus

[Bob12]

Hello. I am struggeling finding an options menu for online pc play. Im pretty sure im missing out on it because I do not know how to form a posse. On ps4 console there was a little button, middle right, that you could either tap or hold and you got 2 different menus. Thats where you could form a posse or info on the current posses on the server you were on. I find no menu other than the standard main menu when you hit esc key. Would appreciate very much if someone could give me help on this.