I haven't seen this in the manual, unless I just overlooked it.  But how do you do the "predicted routes".  Like if you have a scout collecting crates and you want it to go to "this spot" next...  I see many people do this on vids that get posted and I have yet to figure out how. 

 One more, when you select "all units," how do you scroll over to select all banshees, warthogs, etc?

 Thanks for the help.

**** please delete post