calling in reinforcements

[firebird76]

hi i got a question about calling in reinforcements.
is as follows, im in a mission with urss and i must defend the line and then counter-attack the Germans and i see on the right side of my screen some units and time and point but i don't know how to call them in to play and what do the time and points means??
so how do i call in reinforcements and what do the time and point means???