I am trying to work out how the Rotator can be used in Ekos to help frame an object. I can see that that Stellarmate app talks about a framing assistant and I have read the documentation on Rotator. But its not clear to me how would one go about it in regular Ekos? Short of knowing the exact angle to rotate the rotator, is there a visual way (similar to Mosaic) where I can see the effect and frame the object? Any tips would help.
 

Yes, in Ekos capture, click Rotator button and you'd get an interface where you can change the Position-Angle (PA) and see the changes in the sky map.

Is there a way to rotate the view in skymap so you can visually see the effect and the rotator then knows what angle to change to?
That would be a good feature to help frame (if not already there)

No directly from sky map, use Ekos rotator to see the changes in the sky map.