Down arpeggio signs have an arrowhead at the bottom of the line by default, but up arpeggio signs have no arrowhead by default. You can change the appearance of the ends of arpeggio signs individually.
Procedure
Select the arpeggio signs of any direction whose ends you want to change.
Note
You cannot change the ends of non arpeggio signs.
In the Properties panel, activate Sign end in the Arpeggios group.
Select the end you want from the menu:
Nothing
Arrow
Swash
Result
The appearance of the ends of the selected arpeggio signs is changed.