some parameters missing at vis

[javiluz]

hello i need help.......
i´m trying to create a vertical circle trust with 16 mac700ex. the position for the trust has to be at back stage. i need the units in horizontal position and with all the menu screens looking to the inside. so if i do a locate fixture, all of them wil light to the public and if i move the tilt down all the units will go the center of the trust, if i move the tilt up all the units will look like the sun rays. i undrstund that is necesary to have the three paraeters x,y,z to locate the units at the right place and with the right angle. i try to change the three posible parameters that we have at the vis, but it looks that two of them do the same thing.

thnks javiluz