Hey @Donna Burgess, thanks for sharing your approach.
Assuming those who have a fixed desk know which desk is theirs and understand not to book hotdesks, a possible approach could be to setup a neighbourhood called “Fixed Desks” leaving the “Desk Count” empty (this means it’s not restricted).
All those who use a fixed desk can set this as their “Home neighbourhood”, meaning they won’t be asked to select a neighbourhood each time they book. They can then go ahead and join the days accordingly. For everyone else, you could ask them to only use the hot desking neighbourhoods and book accordingly.