Leave blank if you are not sure. Users should be able to change their cookies preferences. Include a link/button anywhere on your page so that users can open the Cookies Preferences Center.
IDs, classes, tag names can be used as a DOM selector: #changePreferences
Example of a link to include on your page that will open the Preferences Center:
<a href="#" id="changePreferences">Change your Cookies Preferences</a>
Link to your Cookies Policy