From time to time, you may wish to create an organization that does not sync back to your PSA. Simply create it with an organization type that is not set to sync. This can be useful if you have some information you wish to store in IT Glue that does not have any requirement for project/ticketing/finance workflows in your PSA.
Or, if you create an organization from your PSA that you do not want to sync to IT Glue, the organization must be set to a type that is not syncing with IT Glue (e.g. Prospect, Lead).