You can find options for the project-wide appearance, content, and position of cues on the Cues page in Engraving Options.
The options on the Cues page allow you to change the size, appearance, placement, and precise position of cues. You can also decide which notations are included in all cues, set the default spacing of cues, and set the default staff position of rhythmic cues and cues from unpitched percussion source instruments.
You can also change the gap after clefs at the start of cues on the Spacing Gaps page in Engraving Options.
There are musical examples for many options to demonstrate how they affect the appearance of your music.