You can still do that if you bunch up every squad and press halt instantly after right-clicking. That way every squad heals themselves. If you're slightly too slow though, you'Il use up all your kits instantly.
So you are telling me, that one medic crate isnt supposed to heal a bunch of squads at the same time?
I always thought it was intentional. 45muni for 3 loads of healing seems overpriced for a faction that has to tech into its own medics.