You can find any tool by the Menu Structure HERE: https://turbocaddoc.atlassian.net/wiki/display/TC21UG/Menu+Structure
You can find the menu location of any tool by name HERE: https://turbocaddoc.atlassian.net/wiki/display/TC21UG/Tools+Mapped+to+Menus
Hide-Show Room Boxes
This option will hide room boxes if they are currently showing, or it will show room boxes if they are currently hidden. This function does not override layer visibility.