If you want to charge an annual subscription fee (charged every 12 months) for one of your courses this article will share how you can do it.
First navigate to the membership you've created within your Memberships Dashboard.
Select the membership that has the course inside that you would like to edit.
Now navigate to the 'Payments' step.
Find the course in step #2 that you want to charge a annual fee for and click on the dropdown here:
Select 'Annual' then enter in a price and click 'Save'. Customers will now be charged an annual fee for your course according to your settings: