Well, in that case, can I suggest you take a look at the current group and see how the thread is organised there, and do something similar and just call it “group 2” or something?
One of the most useful things for everyone is to have a clear schedule, clear links, and a time format that works for everyone! There is a fancy feature in the toolbar above as you write your posts here that gives you the chance to show a date that works for everyone’s time zone…
Take a look at it in the OP of the current group.