Re: How to convert to sheet metal for this part
You have a conflicting overlap of flanges.
So I quickly did some extra cutouts to free up some material:
But of course it's up to you to decide how it should be done in reality...
I also added some blends at these corners just to be sure the weren't touching anymore:
hopefully this gets you started
2x NX1867 Mach Designer
on Win10 64bit
NX Beta Tester with focus on Sheet Metal
Command Finder is your friend