"Assign section layouts" in tutorial for v3.2.2 (meaning?)

From the Tutorial:
[1. Open Compile again. (Note that “Manuscript (Courier)” will still be selected.)
2. Click on “Assign Section Layouts” at the bottom of the central “Section Layouts” area.
⁃ A window will appear. On the left is a list of the section types defined in the project (“Part”, “Chapter” and “Section”); on the right is a list of section layouts defined in the current Compile format, along with a preview of how each section layout will make your text look.
3. Select “Part” in the list on the left.
4. Select the “Part Title” section layout on the right.
⁃ You have just told Scrivener that, when using the “Manuscript (Courier)” Compile format, documents or folders in this project that have the “Part” section type applied should use the “Part Title” section layout during Compile.]

What does it mean ‘Select the "Part Title "section Layout’"? Is the layout just an example of how you want the text to look? Do you select it by high lighting it? How do you tell the app that you’re done selecting?

Thanks for your help,

Click on the it, like you domwhen you select things.
Yes, it shows you how it will look.
You’re done when you have selected something, and acknowledge this when you click Ok, when you are done.
If you do literally what the Titorial tells you, it should be obvious. :smiley:

You select things by clicking on them, which causes a selection highlight to appear. For example when you are instructed to select “Part” in the left list, you click on the word, and a highlight bar is placed there to indicate that it is selected. Likewise, clicking on a preview tile on the right side draws a highlight border around the selected Layout.

So it’s less that highlighting something is the way you select it, and more that highlighting is how your operating system visually describes what is selected. If you try this in Finder you will see the same thing happen. You click on an icon in the Finder window, and it is highlighted, and the various menu commands that work on the selected file will target it.

This is addressed in step 9 of the checklist you pasted from, but it is another general computing thing to be aware of I suppose. In windows that have an “OK” or “Save” button, you usually need to click the button to close the window and confirm that you’re done selecting, or whatever is the purpose of that window (and such windows usually have a “Cancel” button, so you can play around without losing your settings). Windows that lack a button like that, such as Preferences, generally take action the moment you change anything, and you can freely close them whenever you are done.