I use a scheduler factory with GetScheduler to connect to a Quartz schema database with the jobs and triggers. I want to be able to share this database instance with other scheduler instances, but have each scheduler instance handle a different set of jobs. Perhaps each instance would just handle one group of jobs. Is there a way to configure the scheduler instance to only handle one group of jobs, instead of all jobs, so that I can share a database, or do I need to have a separate database for each scheduler instance?