Can I Change Layout Names?
Layout names are used rarely throughout the calendar to reduce the number of scripts required. With the exception of the calendar layouts, you can often change layout names without problems, but be sure to test your work after each change.
However, we do use the names of layouts when drawing new windows, though this usually just involved mini windows like Event Details or print layouts like Print - Bid. Changing these will break our "New Window..." subscript, but you'll get a nice warning when that script runs telling you it can't find the former layout name.
Tables Occurrence and Table Names are a different matter and are used extensively in scripts as well; you may modify file references as needed, but do not change table names or table occurrence names unless you're prepared to go deep and repair a lot of the things things will break.