Rotate Main ViewPort With ETO Form Open

I need to rotate and zoom the main viewPort with the ETO form open.
Perhaps causing the ETO form to lose focus and shift focus to Rhino’s viewport.
But how do I do it?
Is there a way to do this automatically?
Or just with a button on the ETO form?

Somebody help me!!!

The ETO form will appear in the middle of the plugin execution for entering values…

Then it will be necessary to orbit the model to visualize some transformations…