To add a link to your membership purchase page to your website,

click Memberships > Subscriptions and Packs > choose one of the following: Subscriptions, Packages or On-Demand Subscriptions.

Then select the Membership you'll be adding to your website.

At the top of this page you'll find a link to the 'Purchase page' > copy this link and add it to your site.

To preview what the customer will see, click the link.