(For more than 1 gk.)Gk starts on knees, they will recieve a low dive from S1 diving towards S2, and then once they make the save they will get up for a volley from S2 (5x left and right) then switch the gks. If more than two gks, have two be a server and one gk work to keep the flow. If more than three gks, two gks work and two serve. 

Progress to gk standing and going into a low dive from S1 diving towards S2 then recieving and driven ball from the ground to the chest of gk from S2. (4x left adn right)

Then progress to an elevated dive from S1 towards S2 and then the gk will recieve a front smother from S2. (4x right and left) 

IF ONLY ONE GK!!

gk starts on knees for a low dive to either side then recover central on feet for a volley (5 right and left)

Then gk will recieve a driven ball from the ground into hands, then roll it back to server for a low dive (4x each side)

GK will then recieve a front smother, recover and roll/toss the ball back and set for an elevated dive (if gk is more experienced it can be an elevated ball hit from the ground, if not server should toss the ball in wasit-shoulder height. (4x each side)