This is a small description of the swap Pan/Tilt and inverse channel.

Swap Pan/Tilt.
When a fixture is placed in a 90 deg. angle pan and tilt will be a bit difficult to operate because the pan will control the up-down movement and the tilt will control the horizontal movement of the light.
To get it back to a logical operation pan and tilt can be swapped in the Fixture drop down menu.
This will bring the Pan control to control the horizontal movement again and tilt to control the vertical movement.

In the figure bellow fixture mounted at the top has a normal pan – tilt operation.
The fixture mounted left, bottom has also the normal pan – tilt operation which is a bit difficult to operate logically compared to the top mounted fixtures.
The fixture mounted right, bottom has pan – tilt swapped and will be a bit easier to control with pan and tilt control.