The Groups WooCommerce extension is a powerful solution for selling memberships and controlling access to resources based on purchased products in WooCommerce. Here's a breakdown of its key functionalities and requirements:

Sell Memberships: This extension integrates with WooCommerce to offer memberships based on products. Upon purchase, it automatically assigns customers to specific groups based on the products they've ordered. It supports both Unlimited Memberships and Time-limited Memberships, providing access to restricted resources for the duration of their group membership.

Subscription Fee: For those looking to charge a monthly subscription fee, the WooCommerce Subscriptions extension can be used in conjunction with Groups WooCommerce. This combination allows you to manage memberships seamlessly throughout the duration of the subscriptions.

Requirements: To effectively use this solution for selling memberships via WooCommerce, you'll need:

1. WordPress 4.6 or higher: The minimum WordPress version required to operate with these functionalities.
2. Groups (free plugin): Provides the necessary Membership and Access Control features.
3. Groups WooCommerce (this extension): The specific extension that enables the selling of Memberships within WooCommerce.
4. WooCommerce Subscriptions (optional paid extension): If you're looking to sell memberships through subscription models, this additional extension is beneficial.

With these plugins and extensions in place, you can effectively manage memberships, control access, and offer subscription-based services through WooCommerce with ease.