Before your add-on becomes available for your customer, you'll need to let us know which plans the add-on is available with. To do this, you need to link the add-on to the plan.

You can link an add-on to as many plans as you'd like. For whichever plans it's linked to, the add-on will be available in checkout (so long as you've made it public and not hidden!).

To link the add-on, navigate to Products > Add-ons and click on Create your first add-on. When you're creating your add-on, the second step in the process will let you attach your add-on to your plan.

You can link it to as many of your plans as you'd like and make it either optional or forced. If you link a forced add-on to a plan, your customers will only be able to subscribe to this plan with the add-on.

If the add-on already exists, simply click Edit on the add-on and you'll see a list of all the plans with the selected add-on.

Just click on Add a plan and you'll see all the plans that are available to attach to the add-on.

If you don't want an add-on to be available on a certain plan anymore, you can unlink it at any time. If you do this, and a customer with that plan has the add-on as part of their subscription it will not be removed from their subscription. If the add-on is then removed from the customer’s subscription, they will not be able to add it again as the their plan will no longer be linked to the add-on.