MC Through Hole In Metal Barn Ceiling

What is the proper way to pass MC down through an enclosed pole barn ceiling that uses metal roofing as an inner ceiling material? (From attic to lighting)

Also, along the same train of thought, what is the proper way to pass MC down through the same material and through 2 2x4’s acting as the double top plate of the wall below? (from attic to inner wall stud cavity for switch box)

Conduit or bushings

a hole works for me but the hole has to be big enough for the cable to fit into

I figured a hole was fine with no bushing/conduit, the cable is armored against damage, and MC is usually passed through metal studs without any additional type of protection (some require nail plates).