If the overlays are not already turned on (for me they were), then go to the "Customize" menu from the FIFA 16 main menu screen, select the "Setting & Controls" tile, select the "Customize Controls" tile & from that menu turn the "Trainer" setting to "On".
You will know if you have this set properly during a match because every player will have a circle around him showing the direction you are moving (assuming you are moving) - and "context" buttons will be suggested as you play (i.e. the game will suggest
Shoot at different points depending on the (surprise!!) context).
This should be an easy 15 Gamerscore as long as you don't turn off the "FIFA Trainer" overlay and complete the entire match. (I'm fairly certain you can lose and still get this achievement.)