Hi Lucy!
These are great questions! As you know, Memory Maker was just launched a few days ago and I have not had an opportunity to use Memory Maker. It is relatively new to us, but I did some research for you!
The way Memory Maker works is that when you purchase it, it is assigned to one person. When you visit the parks, any pictures taken will be added to that person's MagicBand or card. You can view these photos online on your account at My Disney Experience. Essentially, you would have to add the members of your group as "Friends" on My Disney Experience. If you wish to
reassign the entitlement, before you download any photo or otherwise redeem your Memory Maker purchase, you can reassign the Memory Maker entitlement to any person who has a Disney account and who is connected to your Family & Friends list. Once assigned, that individual will become the owner of the entitlement and this will be linked to their MagicBand. Unfortunately that means that if your group splits up at different parks, only the individual assigned to Memory Maker will be able to capture the photos for your group.
To reassign Memory Maker, locate your Memory Maker in My Reservations in My Disney Experience and select the “Reassign” link. You can reassign Memory Maker to anyone connected to you through your Family & Friends list.
For more information on how to use Memory Maker, please visit this page: Memory Maker FAQ.
It has been a pleasure assisting you and we hope to hear again from you soon! If I can assist with any other questions, please feel free to send them my way!
Thank you for visiting the Disney Parks Moms Panel!
Yael