Hi there JulieMardersdw214
Thats a good question and thanks for using QandAa platform
You also can modify your guest display name when you add a guest to team in Teams by following steps:
- Typing in the member’s email address
- Click Add as a guest
- Click on the pencil icon to edit the guest information, replace the username with the proper name
- Click on the check mark to save your edits
- Click Add
- Close
For a detailed info follow te link below
If this helps kindly accept the answer thanks much.