All of time signature or key signature in the new score will be set according to your selection here. Of course, you can set more time and key signatures later.
Note: No selection for time signature or key signature by default if there is not a single setting respectively for them in the selected score template.
Time
Upper number: The number of beats in a measure.
Lower number: Note value to constitute one beat.
Reset
Reset time signature and key signature to original settings in the selected score template.