I am using Windows shortcut keys here so translate to Mac if needed
- Ctrl + T (enters time map)
- Hold Alt to select pencil tool, then click at the top of time grid in bar you want to change time signature. It defaults to 4/4…double click the “4/4” to highlight and use keypad to enter 11/8 or any other value.
Hope this was adequate explanation if not let me know and I will try again, its easy to do.
Kenny