soSIMPLE Calendar allows you to filter your calendar by many methods.
If you use any of these methods to show only specific resources, your Timeline and Resource view will still show columns and rows for all of your resources.
You can filter what resources columns and rows show up by adding the following to your URL:
&filter_resource=room 1|room 2|room 3
following the equal sign is a list of resource names separated by the pipe character
if you are showing resources by a separate key field, you should use the key, not the name of the resource
soSIMPLE checks the name or the key against valid resources and displays only those resources