Takatu

Hi, I'm currently in campagne mission "Badlands". After I capture the first village i got a HQ and can buy units. After I bought a unit, the unit join automatically my Squad (Razor Squad). It's very hard to operate with one monster squad and "ctrl + space" mode is useless. How do I split my squat and/or move units to other squads and/or create a new squad? please help me. Thx Takatu