You will find the corresponding option inside:
Dashboard >> Appearance >> Customize >> BuddyPress Nouveau >> Member Navigation.
Here you will get the following options to customize the navigation menu for members. In the preview window, navigate to a user to preview your changes.
- Display the member navigation vertically.
- Use tab styling for primary nav.
- Use tab styling for secondary nav.
- Also Allows you to drag each possible member navigation items into the order preferable order.
Member Navigation Settings: