Staff/Apply Staff Style To submenu

From this submenu, choose to apply a staff style to the current visible part/score, or the full score and parts.

Score and Parts. Choose this command to display the Apply Staff Style dialog box, which lists all the currently defined staff styles available. Select a staff style to apply to the selected region for the score and all parts.
Current Part/Score. Choose this command to display the Apply Staff Style dialog box, which lists all the currently defined staff styles available. Select a staff style to apply to the selected region of the currently visible score/part.