Is there any way to subtract at once multiple shapes from an existing fill? It is quite annoying that for each subtracted element i have to go back by clicking at the edge of the fill to be able to subtract it from.
Yes that is exactly the way I have been doing it. But nevertheless, I still have to go back at the edge of the main fill each time in order to be able to subtract a shape from it. Is there any reason for that (maybe some setting that has to be adjusted ?)