Why do you need 16 teams of 6 bots at the same moment ? I never needed more than 6-7 teams, most often it's 3.
And I don't think you can have more than 16 teams. Though you may try via adding more team folders AND modding Teams.txt so it supports the new team folders.
Also, you can perfectly just rename your teams folder to "Teams2" and copy/paste a new Teams folder on here. When you want to change, rename the old one to "Teams" and the new one to "Teams2"