If the same Style is used for each of these bullet points, yes, you can modify the paragraph Style. I am capitalizing Style to emphasize that this is a Word feature rather than simply meaning how things look.
Understanding Styles in Microsoft Word

You are undertaking a major project using Word. Word is not a typewriter. By not having a good understanding of how this deceptively complex program works you are getting it to fight you rather than help you. Spending a few hours learning Word will save you days of tearing your hair out.

Basic Concepts of Microsoft Word - from Shauna Kelly

And finally, on numbering, it wouldn't hurt to look at How to create numbered headings or outline numbering in Ribbon Versions of Word by Shauna Kelly .



These should be the same unless you put a shortcut to a different template on your Start Menu.

I suspect that if you are going to be doing the same kind of work a lot of the time, you would want to set up one or more numbered styles in a custom screenplay template for that purpose. Templates in Microsoft Word

You could also include boilerplate formatting and parts as AutoText.
Automated Boilerplate Using Microsoft Word