I need to limit the options available for users, specifically with font selection. For some products, I do not want to have the font dropdown available for them to choose different fonts. I can't seem to find where to disable this.

Also, for other products, I'd like to be able to do ALL CAPS only or Sentence case only. Again, can't find if it's possible to set those parameters.

Thanks!

UI Composer>Toolbar>Exclude Tools+Type 

You can create and save a new User Interface for each product

at the product creation stage (product Builder)

If capital letters are defined in the text field created here, it will be permanent.

Unable to capitalize some words in the same paragraph

If you want more help you can ask.