Change your logo and profile details
Go to WhatsApp Business Manager > Phone numbers.
Number setting.
Then in Profile you can update your photo, description, address and website.
Change Display name
Go to WhatsApp Business Manager > Phone numbers and hover over your current name.
Click on Edit the display name.
Enter new name and click Next
When choosing new name, make sure to follow WhatsApp Official Name Guidelines
Tip: If you don’t see your number in the list, it may be saved under another WhatsApp Account, just open drop down menu at the top right: