It’s standard practice to display the time signature at the beginning of each system. You can, however, tell Finale not to display the time signature in a particular measure (in which the time signature would normally appear).
To hide all time signatures for a staff see Staff Attributes dialog box.
To hide the time signature in a measure
To hide automatic courtesy time signatures
When a time change appears at the beginning of a system, a courtesy time signature appears automatically at the end of the previous system.
To remove the courtesy time signature that appears automatically at the end of the previous system: