I have built a 3m x 3m  truss square, which I would like to move as if there were a hoist on each corner.  The truss is linked to a single vertical motion controller, which works just fine. I have then linked one rotator that allows me to rotate the truss and still adjust the vertical movement. I am trying to add a second rotator to rotate the truss in the opposite plane to the first. I have tried linking this second rotator to the motion controller or the other rotator, but I can not see to get it to function. Is this not possible, or did I miss something?   Any suggestions greatly appreciated.