Best tips, techniques & advice on "time management?"

As a young Leader, one of the ways I've practiced time management is to learn my Soldiers strengths and weaknesses FIRST. I feel that once I know what one Soldier is good at, or what one Soldier is not so good at, it enables me to use both to my advantage. For example, I have a Soldier who I can say "Go to the battery, open the connex, look for the third toughbox on the left and grab 5 handmics and bring them to SSG XYZ." and that Soldier will say "Check, rgr" and move out, no questions asked, not having to repeat myself. On the other hand, I have another Soldier who I can say the exact same thing to, verbatim, and get a call or text from said Soldier 2 minutes later asking what I needed him to do again. But that Soldier is perfect for remedial tasks such as "Update our tracker.", etc. Not the best of examples, but my overall point being that by learning their strengths and weaknesses, I can effectively task my Soldiers out, saving me time for other important tasks!