How do you deal with squaddies who don't follow your objectives as SL?

I started to like SLing after realizing most players picked only AT and Marksman. Personally, I generally have an objective or strategy in my head and try to coordinate my squad accordingly. I also try to divide my squad into fireteams in a way that could serve our purpose at the time. As you would guess, there will always be people who are not into such teamwork, wandering off away from the objective chasing tanks, etc. I tend to kick them out of my squad, but not always.

How do you manage those people? Do you really care what they do? Do you really try to "manage" anything?