Edit work Plane (For light fixture)

[anand.pawarBQFPM]

With reference please see the attached image. 1

Please see the selected light is not associate with any work plane . Therefore i have been trying to edit work plane and associate with another work plane which are exists. 

Please see the image 2

But i don't see the other existing work planes here in drop down list. 

Can anyone assist me what to do see those work plane. 

Thank you

[iainsavage]

First (obviously) the reference plane has to exist and then it has to be named, then its name will appear in your list.

Or in a section view you can use the “pick a plane” option to select the plane graphically.