Exchange Distribution Group Add Remove Users

We have a user that has a mac. He wants to be able to edit distribution groups in exchange. I have logged into OWA as him and gone to options, more options, then selected "manage my organization". From there, selected distribution groups, then membership, however the "+ADD" and the "-REMOVE" fields are missing. Other options are greyed out. See screenshot.

In exchange, he is the "managed by" for the distribution groups in question. I am able to do this when logged in as the administrator, so believe this to be a permission setting.

By the way, this is Exchange 2010.

Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

AmitIT ArchitectCommented:

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.