Set up meeting in Teams with SSO on premise

Hello all, 

I'd like to know if there is any way to set up meetings in Teams while we do not have our system full on cloud. We do not have everything on cloud, so we do not have some feature on Teams Desktop like "Meeting" "Calendar", etc.

I'd like to know if there is any workaround to set up meeting on a specific date without those features.

One thing we sometimes do is setting up the meeting in Outlook (Meeting with Teams), but I'd like to do it directly in a specific Teams Group. 

This is what I see:

Basically, I'd like to set up meeting like in Outlook but on the Teams Desktop. 

Thank you,

Dorian Liu