How to display new categories for all members?

Hello everyone, I recently created two new categories on my forum (Design Guides and Giveaway Zone) but a member informed me that these new categories were not visible for him. It seems that he’s not the only one not seeing them. How can I make them visible for all members?

What I see:

What other members see:

If you use the pen icon next to the categories in the sidebar, you can adjust the categories only for yourself. You can change the default for everyone in the default_navigation_menu_categories site setting.

Ah yes, thank you very much!