How can I build more groups?

You can only increase your group limit by taking more base stations. Each additional base station increases your group limit on the respective map. Important to know: every map has its own group limit, so you only increase the group limit on the map where you also take the base stations.

Here you can see some example values

Number of bases	Group Limit
1	4
2	5
3	6
4	6,5
5	7
6	8
7	9
8	9,5
9	10
10	11
11
12	12,7
13
14
15	14,2
20	16,4
30	20,1
50	23,6
100	36,7