Change Font Sizes and Different Font Families

I would like to be able to change my font size in certain documents.

Sometimes, I would like to be able to make a particular font smaller to serve as a minor note for myself in a bullet point under a particular bit of text. That way when writing something, I can visually see it on the page instead of having to make countless comments about things to make a note on that detail. I will then have to turn Comments on and off and then search for that particular comment later in a huge list of them if my document has lots of minor comment notes like that. If I could just change my font size to make that minor note for myself, I would be a lot happier.

Also, if I could change a particular font type to know when I’m looking at something different in my story, such as handwriting in a letter for example, it would make a world of difference to me. Is there any chance something like this could be added in?