Hey, this is going to be a very basic question for some of you out there but just to provide context. I'm doing a cabinet making apprenticeship and am now running our Biesse Rover S FT as well as our CNC operator left. I have no proper training on the machine and am completely learning as I go and by myself.

I want to know the following:

1.) How do I change the layout of pieces after they have been nested to ensure there is no mini offcuts that lose vacuum and get caught as the machine is passing/damage the tool as it's making a pass.
2.) Currently, my tool is going too deep and also milling and boring into my cnc board while it's running the program, how do I raise this or ensure this doesnt happen, as it is causing problems with dust and I will go through my CNC board way quicker.

Thank you!