Approves requests to join a group.
Note: This function is only relevant for private groups.
The approvejoinGroupRequests() function returns a Promise that resolves when a site member's request to join a group is approved.
Only site admins and group admins can approve site member requests to join a group, unless the group setting, membersCanApprove is set to true.
ID of the group requested to join.
IDs of the site members to approve.
This method doesn't return any custom errors, but may return standard errors. Learn more about standard Wix errors.