You can't. The only thing you can do is use the "FAMILY" feature in the App and invite someone that has their own GMAIL account to have permission to see things. Note this will give them 100% access to everything in including making changes. Google has a lot of work to do in enhancing this area in my opinion.
Just checking in to see if you still need assistance with this issue. We'll leave this topic open for another 24 hrs in case there are any follow up questions or comments. Please let me know if you need further assistance.
