When editing your user upgrade, set length from "Permanent" to your preferred length, and optionally check "recurring payments", if you want it to automatically be renewed unless the user cancels.
When editing your user upgrade, set length from "Permanent" to your preferred length, and optionally check "recurring payments", if you want it to automatically be renewed unless the user cancels.
Admin Control Panel > Users > User Upgrades. You'll need to configure a payment provider under ACP > Setup > Payment Providers first if you haven't done that yet.