Which setting on a profile makes a tab hidden in the All App Launcher or...

To make a tab hidden in the All App Launcher or visible in any app, but still allow a user to view records that would normally be found under this tab, the administrator should use Tab Settings on a profile. Tab Settings control the visibility and default behavior of tabs for each app in an org. The administrator can set a tab to Hidden, which means it will not appear in any app or in the All App Launcher, but users can still access records via other means such as search or reports. Object Permissions, App Permissions, and Org-Wide Defaults are not related to tab visibility. References: https://help.salesforce.com/s/articleView?id=sf.customize_tabs.htm &type=5