Use the Contracts feature to allocate a specific amount of support time for your customers and manage any service items that need to be carried out regularly e.g. ink cartridge replacement. Contracts can be set up so that they are recurring or for single use.
When a ticket is raised for a customer and a time entry is recorded, the number of hours is deducted from the number of hours recorded in the contract for that customer. You can also configure your contract to send notifications when the number of support hours remaining goes below a certain value.
You can create more than one contract per customer, however only one can be active at any one time.