[How to add baseline slope to a polygonal field]

Dear PVsyst's experts,

I want to create PV fields which are not full rectangular - some panels are missing.

I can do it with the polygonal tool easily.

However, I cannot add a baseline slope to a polygonal field. I can only do it with the rectangular and frame fields.

Unfortunately, with these tools, I cannot remove panels from the field manually.

Is there any way to create a baseline sloped field which is not a complete rectangular?

Thanks in advance,

Moshe