Currently, if you want to share a file to a new admin then you need to access the code and add in the new Email-ID. Which is not appropriate as a client. So, the suggested fix:
[x] Add a new model to hold all the email id and access the email id from the model to share the sheet to the admins
Currently, if you want to share a file to a new admin then you need to access the code and add in the new Email-ID. Which is not appropriate as a client. So, the suggested fix: