Unable to modify DG from Outlook Client

We are running Exchange 2010 and just found out that users are unable to modify a Dist. Group from Outlook client like they were able to do in the past.  We have a user that would like herself and her team to modify email groups and from what I have read since 2010 they feature is off by design with in the Outlook client.  Back in the day (its been awhile) we use to choose a group in Outlook and modify the users in there no problem but after Exchange 2010 that feature throws an error which I have attached.  I was doing some research and there are workarounds but we want to know what Microsoft suggest we do to allow a group of users to modify DG again with in Outlook.  I am sure many others have ran into this and wondered if they found a easy way to allow this again.  We don't want to give these users to AD just to make the changes.
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Blue Street TechLast KnightCommented:
Hi USSCITSysAdmins,

There are multiple causes for this, but primarily RBAC (Role Based Access Control) were introduce in 2010 and have remained in all versions currently. Also because of RBAC you can't have group manage groups. There are other reasons too but there are also valid solutions to this: https://support.microsoft.com/en-us/help/2586832/can-t-manage-distribution-group-from-outlook-with-exchange-server-mail

Let me know if you have any questions!

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USSCITSysAdminsAuthor Commented:
I seen those solutions but which would be a Microsoft recommended solution you think?  I can do it through ADManagment but we will need another 5 licenses and that a 1000 more.
AmitIT ArchitectCommented:
Use RBAC option in Exchange 2010.  That is the recommended method.
Blue Street TechLast KnightCommented:
They provide different solutions for different causes - the best recommendation is to look at which is your cause and the correlating solution. It sounds like Cause 1/Solution 1 would fit your description but again you know your environment best.
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