i have some of quite complex machined parts as pictures (part has cam, drill, tap drill on side surface)

now, i can build it as a part.

My problem is I need the part flattened for insert to a drawing but I don't know how T____T.

The part's drawing need to be unfold to show profiles of side surface.

I attach example drawing too.

Thank you for any kind help and sorry for my English ^^