Homebrew Subclass Spells: How do i use spell charges?

I see the fields to set min/max spell charges used. How do I set how many spell charges a feature has?

Quote from Calavid >>

I see the fields to set min/max spell charges used. How do I set how many spell charges a feature has?

 Unfortunately, that feature does not work currently.

Saddening to hear, but not surprising either...

Do you know of any way I can give a character access to 4 different spells, but be only able to cast one of them with a spell slot per long rest?

Same as this:

https://www.dndbeyond.com/forums/dungeons-dragons-discussion/homebrew-house-rules/78151-multiple-spells-w-shared-uses

Only add four spells and set the limited use to 1 and make sure that the text also specifies that they have to spend a spell slot too.

Many thanks!

I really wish they'd grey-out features that don't work