Go to the Subscription Plans page and edit the plan (or add a new one) you want to set as the recurring one.
Set the new "Recurring" option to "Yes".
Recurring payment for such plan will be performed every X days, defined by the standard "Expiration time" parameter (available in the "Params" tab).
Two payment plugins currently support the Recurring Payments option: PayPal and PayU - each plugin works a bit differently.
PayU plugin
For the DJ-Classifieds PayU payment plugin, each recurring payment is initiated on the seller's website.
The payment plugin has a "Recurring payments" tab to set all the required fields.
The user's options for unsubscribing (Dotpay payments) can be turned off in the Plans plugin.
