To add a variant:
First, make sure you have a subscription group
From Ongoing, click Subscription Groups
3. Select an existing subscription group
4. On the Variants tab, click Add Variant
5. Type in name of product variant and click Search
6. Select the product variant(s) you want to add to the subscription group and click Add Selected Variant
This is how your variants will look after they've been added to the subscription group.
This will display subscription plans on the product page. Customers can now place a subscription order on this product variant.