[Mailman-Users] Bulk aproval?

Hi mailman list, I have about 500 requests to join the list waiting to be approved.

1. Is there a way of automatically aproving any request, something like an "open" free list to join for everyone?

2. How do I bulk approve those 500? Currently it seems I will have to click 500 times on the "Approve" checkbox, which is a pain.

Thanks for help, Danijel