Control Actions...how does it work? Options

[yesferatu]

So I was reading the Control Actions spell and I wanted to clarify how it works.
1. When a target is controlled, it takes a simple action to make them do something...and their Willpower is a negative modifier on any actions they take.
2. Since a character gets 2 simple actions a turn, does that mean that the spell caster can't take any complex actions while they're controlling someone?
3. Does the target still get their regular actions on their turn? Does that give them two actions a turn, or do they lose their regular action?
4. Do you use the caster or the target's skills? Can you make a target do something they don't know how to do?
5. What kind of suicidal things can you make a target do? Can you make them walk off a ledge or shoot themselves in the head?

Is that spell as overpowered as I think it is or am I just reading it wrong?