On the clef context menu
When you right-click on a clef symbol, a context menu with a list of all available clefs opens. This menu also contains the following options:
Display Clef Changes as Small Symbols
If you activate this option and insert a clef change in the score, the clef is displayed with a smaller symbol.
Warnings for new Clefs at Line Breaks
If you activate this option and insert a new clef at a line break, the Clef change symbol is inserted in the last bar before the staff break. If this option is deactivated, the symbol is inserted in the first bar of the next staff line.
Hide
If you select this function, the clef is hidden.
Properties
If you select this function, the Edit Clef dialog opens.