I am using Gubi-D Tactical Battle System(If you don't know go google)and I need something called command points.Basically it is the ability to make officers join your team,like an officer which needs 12CP can enter the team which has more than 12CP.If the CP is not enough to invite the officer,he cannot be the choice.
Once a officer enters the team,the CP decreases like HP.The team member max number should be 4,no matter how much CP space it leaves.
I don't want it to be related to items,and I don't have scripting idea.Sorry.