[mGGFender]

Hello Everyone. This may seem like a stupid question but I’m wondering what methods people use to create army control groups and which is the best? Keep in mind I am a terran if that makes any difference. I am having a lot of trouble microing a large army against protoss so I really need to get all these control groups going, but I often find myself fumbling around misclicking whilst trying to create control groups which ruins my macro and just generally wastes time which I could be doing other things.

For Example, if you wanted to get your marines, marauders and medivacs together do you:

Double click the marines, then shift double click marauders and medivacs OR
Control click, then shift control the other units OR
Am I missing something else?

Do you click on the actual units or the unit bars down the bottom? (I was thinking maybe you would click down the bottom for ghosts for example, as they can be hard to find in your army quickly sometimes)
I just want to know the quickest and most efficient way to do this in game as I often cannot do this quick enough and it affects other areas of my gameplay.

Thankyou for your time!