How to hide regions of character parts

Hello!

I would like to be able to create modular characters thats would have many parts like a shirt, pants, shoes etc.
I would then like to seperate all those parts into regions taht I could then use to say what region to hide depending on the parts used on the character.

I was wondering how I could hide regions of the parts so that I can get more meemory performances of not rendering unseen faces.

I tried exporting the same cube twice, one full and the other with hidden faces but both were all visible and the their file size was the same.

The use for this would be the have more variaty for the characters with less parts.

Thanks you in advance for the big help! :slight_smile: