Navigate to [https://admin.google.com/ac/apps/gmail/usersettings](https://admin.google.com/ac/apps/gmail/usersettings)

Look under "Mail Delegation" and make sure it is turned "ON". If you click the pencil icon, you can edit further details.

Now you're done! Here's a Scribe that shows your users how they can delegate their inboxes to others, now that you have set their permissions to on : 

admin.google.com

mail.google.com

ogs.google.com

apps.google.com

realtimesupport.clients6.google.com

In order for users in your company to be able to delegate their email accounts (say, to share with an assistant), you need to have a global setting turned on so they have permissions to do so. This Scribe shows you how.