Change my display name

[KazuT]

How do I change the default name that comes up on my video when I join a meeting? Of course, I can click on the three dots and Rename, but I don't want to do this every single time I join a meeting. I went to Settings/ Profile / Edit My Profile, which launched a web page, then selected Profile, but the name listed under "Display Name" on this page is not the name that comes up on my video when I join a meeting.