This will only apply to the Site that you are in. If there are other SharePoint Sites, you'll need to replicate your actions.

Click and hold on the 2 lines to the left of the link, and drag into the new desired posistion.

Click on the add icon at the bottom of the list.

Select from the list. A Link is for a URL, the Hub options are for internal associated Hubs, and a Label is if you want to create a group of links.

Remember to keep this concise, as a longer name may truncate on smaller screens.

Decide if you'd like this to open in a new tab or not, then press "OK".

This guide provides step-by-step instructions for editing navigation links in SharePoint. It covers removing, moving, and adding links, as well as important considerations such as concise display names and choosing whether the link should open in a new tab. If you want to efficiently manage the navigation links in your SharePoint site, this guide is for you.

SharePoint - Editing the Navigation Links

Removing

Moving

Adding