Click on your name in the top-right corner and navigate to "View Profile"
Click "Update Profile"
Modify the desired info by clicking directly on the text. If the text is greyed out, it means it's synchronized from an external source, you won't be able to edit it
You can edit the visibility status by clicking the "" button to switch between "private" and "public" visibility options
Click "Update Profile" button to confirm your changes
" button to switch between "private" and "public" visibility options