You often need to change permission on Resource Mailbox or to delegate the permission. This article will provide you with the brief info on how to do it.

Step 1. Login to Exchange Admin Center (EAC) via

Step 2. Within the Dashboard, under recipients click on resources.

Step 3. Locate the Resource Mailbox you are trying to change permission for and double click on it.

Step 4. In the new window, go to the last option on the left pane, i.e. mailbox delegation

Step 5. Scroll to the bottom of it, and you’ll find Full Access section.

Step 6. Add the user who need to have full permission on the resource mailbox.

Step 7. Ok, and save the changes.

You are all set. You have assigned the user with full access permission on the mailbox.

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Passionate for Latest Gadgets, a Computer geek by Hobby, and luckily Profession too. Started my career in 2005 with IBM, worked with Microsoft later. Back in 2009, started Pledge Technologies ( (parent company to Grishbi). We, at Pledge Technologies, provide IT Consulting to SMBs across US & UK. Specialized in Microsoft Technologies like AD, Exchange, etc., and lot of experience of Office 365 Migration for various clients. Grishbi is a platform where we express what we learned today, and share it with world.