AboutThis article demonstrates step-by-step instructions for Enabling UM in O365.
Step-by-Step InstructionsThe below table will detail the steps required to accomplish your goals:
Login to Office 365
Login to O365 using an admin account, then finally clicking the Sign in button as shown in Exhibit 1.
Go to the Exchange Admin Center
Now, go to Admin located on the upper right-hand side of the page, and click on Exchange from the drop down menu as shown in Exhibit 2a. On the Exchange Admin Center, click on recipients, and under mailboxes, choose a user, then on the third column, look for Unified Messaging and click on enable as shown in Exhibit 2b.