Team Scheduler automated

Lucky me, I have been tasked with creating the teams competition schedule....

But what I want to do it make it automatic, and possibly look into making it bigger if required (future-proofing).

The issue I am having is I cant see the pattern.

6 teams
4 locations
15 rounds
3 teams are based at one location - but only room for one game
Round 1 has been done already as we begin this Thursday.

After any ideas, thoughts or how to's.

Cheers