Linked forms feature allows user to move from one form to another and then back.

Below screenshots illustrate example setup using linked forms.

"Stub Data" form has "Go to Owner Data" custom button (1) navigating user to another form:

onClick event (2) triggers "Navigate to User Details" action (3) that navigates user to "Stub Owner Data" form. This form's source is "User" object, so Stub__c.CreatedById is passed as record id (4).

"Stub Owner Data" form represents user details. "Show Navigation Panel" is checked (5) meaning user will see breadcrumb to go back to previous form. Standard "Close" button (6) is enabled as well.

Here is how it looks for user: once moved to the "Stub Owner Data" form (7) user can go back using "Close" button (8) or click form name in the breadcrumb (9):

This way user can navigate through as many forms as necessary.