By default, key signatures are shown at the start of all systems. You can hide/show key signatures at the start of single-staff systems from the second system onwards in each flow independently.
Hiding key signatures on single-staff systems after the first system is a convention used in hand-copied lead sheets, usually in combination with hiding clefs and showing systemic barlines.
Procedure
Result
Key signatures are hidden or shown at the start of single-staff systems from the second system onwards in the selected flows.
Note
-
Key signature changes that occur at system breaks after the first system are always shown.
-
Key signatures are always shown at the start of systems that contain more than one staff.