Process to add dial in conferencing numbers to Skype for Office 365

I need to add dial in numbers for conference calls for my organization within Office 365.

We also need to make sure that whenever a user schedules a Skype meeting within Outlook 2016 (through Office 365) that the dial in numbers will appear below the "Join Skype Meeting" section of the calendar invitation (see the screenshot).

How can this be done?

IT GuyNetwork EngineerAsked:
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Vasil Michev (MVP)Commented:
For starters, you need to buy and assign the corresponding licenses, and then it will automatically appear under every SfBO meeting. You can also change the numbers if needed. Read here:

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IT GuyNetwork EngineerAuthor Commented:
What Office 365 licenses need to be purchased?
Vasil Michev (MVP)Commented:
Audio Conferencing, as detailed in the above article.
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