Ability to override the including weekends as available timeline days at the Board level without changing the orgainization defaul

We would like to keep the Admin level setting to exclude weekends in available dates and timelines. However, I have a specific project that needs to have non-workdays (weekends) available to set tasks. I would like the ability to override the default at the board level so I can have weekends available only for specific projects.

Really need this too. We want to track working days as Monday to Friday, but we also have a board to track filming days which can land on weekends.