How to Create Username for your Facebook Page on PC?
Step 1: Go to the Facebook Page.
Step 2: Click on 'Create Page @Username' link below your page name.
Step 3: Type the username that you want in the box under 'Username'. If that's available, it will show green checkmark.
Step 4: Click on 'Create Username' button.
If everything goes well, you will see a message 'You are all set'.
It's done.
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