If you want the camera to rotate 360 degrees,
just set:

Frame#1 camera yRotate to 0 degrees
Frame#(last) camera yRotate to 359 degrees

... and Poser will fill in all the inbetween frames correctly.

Want it to go the other direction?
Just set last frame to yRotate to (minus) -359 degrees.

If you want it to stop anywhere, just use the graph editor and set the spline to "constant."

cheers,
dr geep
;=]

Remember ... "With Poser, all things are possible, and poseable!"

cheers,

dr geep ... :o]

edited 10/5/2019