Do you mean to show your employees in Teams this contact information as shown below?
This requires you to add employee information in the Microsoft 365 admin center. Start by signing into the Microsoft 365 admin center, selecting Active users, and clicking Specific users to add personal information.
Hope this helps! Moreover, if the above is not your scenario or I have misunderstood anything, please correct me and provide us with detailed information about the issue including the screenshot so that we can better understand to further assist you.
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