You can set start and end dates for the agreement.
If a start date is not set the agreement will run from when it is created.
If an end date is not set the agreement will run until cancelled.
You or the shopper can cancel the agreement at any time via the Merchant Interface.
Payments are always initiated by you, using the Merchant Interface, or a script.
If a payment is not currently permitted (because of the limitations in force) then you will be given the date on which you will next be able to take a payment.
If a payment is possible then you enter the amount (within the limits set) and initiate a payment.
If it fails you will only be told that the payment was declined. You will also be notified if the agreement becomes suspended. You can then contact the shopper to inform them of the problem.
See Limited Agreement Options for more details.