Hi
often, i need to rotate a group of object, like truss with projector or something and it's a pain for me in lots of case like this one : Ho to rotate along the X green surface ?
even if i make a group it's a pain.
At the moment, there is no dedicated tool to rotate a selection along a specified line. You need to use the rotation anchors until you get the desired result.
Alternatively, you may select one of the objects and use the Camera / Swing to Selection command to align a view with the marked surface. Then you select all the objects you wish to rotate and use the rotation anchor.