Yes of course it’s one of the most important features when you design for CMS data: Conditional Visibility.
Select your link element and go to the Settings tab. Under Conditional visibility, click + then select your field in the first dropdown, then “Is Set” in the second one. It means “Show this element when there’s data in that field”.
You can also control visibility using a Switch field. For example, you could have a totally different header for your team members when they are in the head team, for example. You’d create a “Head team” switch that you’d turn on when you add a head position person. Then you’d design a totally different header and condition its visibility to the field switch when it’s “On”. And you’d do the opposite for the classic header, showing it only when the switch is “Off”.
You can achieve different-looking CMS pages depending on any field, switchs, options (show if option value is…)