you will find in the tool-bar Symbols category <Articulation>.Entering And Editing Jazz Phrasing Marks
The buttons/ you will find in the tool-bar Symbols category <Articulation>.
"Removing marks (symbols)"
Glissando Down
Glissando Up
Fall
Lift
Lift
To save the time, you can enter any number of articulation marks at once! That goes over selected (marked) areas which contents more notes and voices.
This means: you can provide 1, 2, 3 and 4 trumpet(s) ( depends of selected area) with a "Fall" simultaneously with a single mouse click!
The new signs (marks) overwrite the previous ones!
Note: To remove articulation sign(s) (marks) you simply overwrite the highlighted (selected) notes with 
"No Articulation".
Tip: To move articulation marks, you click on the button 