By default, people who signed up for groups are not automatically considered as members. They can't access the group information until an officer has validated their memberships.
To validate members in pending validation, please follow the steps below:
1. Manage your group.
2. Click on "Members" then "Current Members" in the left-side menu.
3. Retrieve all the members that need to be validated by clicking on the "Members pending validation" link.
4. Check the "Validate" checkbox.
Note: To validate all new members automatically, please follow the tutorial below: