You can find options for the project-wide appearance and position of guitar bends, pre-bends, post-bends, and vibrato bar dives and returns on the Guitar Bends page in Engraving Options.
The options on the Guitar Bends page allow you to change the height, minimum horizontal spacing requirements, and thickness of guitar bends, pre-bends, and post-bends, both on notation staves and tablature. There are multiple options for the appearance of bend intervals, releases, and hold lines on tablature. You can also set precise positions for the endpoints of guitar bends, pre-bends, post-bends, and vibrato bar dives and returns relative to noteheads, beams, and staff lines.
There are musical examples for many options to demonstrate how they affect the appearance of your music.