Find out more about your members before they join your group. Create questions for people requesting to join your groups. Ask how they discovered the group, why they want to join or just get their basic details. Potential group members can answer membership questions either from a desktop or from the Wix mobile app.
Want to upgrade your existing groups? You can get started using this guide https://support.wix.com/en/article/creating-and-managing-membership-questions#creating-and-managing-membership-questions-from-the-dashboard.