On the schedule board there is an option to change the Retrieve resources query. In our system we made our on query to fetch the resources. However when a user updates the query on the board, it does not update immediately, the user has do do the update twice on each board. This takes time and education for all users to make the functionality work.

According to Microsoft support changing the query that is used to fetch resources does not automatically re-run the resource filter and search on the board. 

For the time being there are no plans on to support this scenario since customers do not frequently change these settings as part of normal operation of the board (only in configuration and setup).

They have also suggested creating a new board tab that will have its own settings and can use its own resource query in case you need to switch between resource queries often. Possibly opening both schedule board tabs in separate windows. 

Our customers would like to have this fetch updated automatically.