You can find options for the project-wide appearance and position of ornaments on the Jazz Articulations page in Engraving Options.
The options on the Jazz Articulations page allow you to change the default length of bends and the default line style, design, and angle of smooth jazz articulations. You can also change the default positions of jazz articulations relative to noteheads, staff lines, rhythm dots, and jazz articulations belonging to other notes at the same rhythmic position.
There are musical examples for many options to demonstrate how they affect the appearance of your music.