With all charges and compulsory moves attended to, you can now move the rest of your army. While it might lack the drama of charging or the jeopardy of compulsory moves, the Remaining Moves sub-phase is no less important.
During this sub-phase players manoeuvre their remaining units in order to set up charges for future turns, as well as attempt to deny future charges their opponent will wish to make. This is also the time to manoeuvre missile troops and Wizards so that they have suitable targets, seize important areas of the battlefield, and so on. Finally, Conveyance spells can be cast at any point during this sub-phase.
Note that units which are fleeing, that charged this turn or that moved during the Compulsory Moves sub-phase cannot move again during this sub-phase. Their movement for the turn has already been completed.