While it is not possible to select individual photos from your Aura app's 'Photos' section and transfer them to another frame, you can transfer or delete entire photo updates from your 'Activity' section. This will move all photos that are linked to that update to the new frame. 

How to use the feature:

• Go to the selected frame's ACTIVITY screen (1)
  
  
• Scroll down to the activity update that includes the photos that you want to remove or transfer 
  
  
• Click on the ". . ." button next to the photos (2) 
  
  
• You can now copy them to another frame that you also contribute to: