Each of your Memories on Miigen can be edited as many times as you like, allowing you to add more as time goes by, update information or even add voice tags to the photos you missed!
1) Find a memory in your latest memories or click ‘Manage Memories’ to view all and select one from there.
2) Once you have selected the Memory, click on it and it will show you the Memory in full.
3) Click on the ‘Edit’ button at the top right-hand side, beside the Memory title. This will let you edit all the options within the Memory.
This appears on the bottom of the screen on mobiles.