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.