This great! This is really the only feature left to check off as required for my client looking to build a membership site.
The other ones were (and I have not been able to locate it anywhere else (Joomla or Wordpress)
1) having a specific annual expiry date WITH the ability to auto-renew.
2) Option to allow new signups within x number of days of a renewal date to extend their plan to the next renewal date.
If I can set up a family group plan, then it would be a no-brainer to stick with CBSubs. I've spend hours scouring the net to see if there's anything else out there and CBSubs is simply the most highly configurable extension I've ever seen. Family/Group plan is the missing piece of the puzzle!
But I digress.
I did manage to find a couple of Wordpress plugins that come close to what I need and may help you sort out the UX/UI. One uses the "100% off coupon concept (Paid Membership Pro) while the other is close to what I envisioned (Memberpress). I hope these help.
www.paidmembershipspro.com/add-ons/pmpro-sponsored-members/
docs.memberpress.com/article/94-corporate-accounts