Thanks @thelmachido, that was very helpful. I had not realized that there were properties which could only be set on the block toolbar and not in the block properties section on the right. Finding the block inserter helped a lot also. It still feels like there are a lot of rough edges in the UI which make it hard for a new user. For example insert before and insert appear in the context menu for most blocks but not in the context menu of a Page Link Block or Post Link Block. I still can’t figure out how to add a submenu to a menu.
