The Green Arrows, which allow you to move things on the horizontal axis in four directions.The Purple Disco Ball, which allows you to adjust position and rotation increments, select which elements should be adjusted, and reset the positioning.
The Sex Positioning controls consists of. To access the positioning functionality, click on one of the sex participants and 'Enable Positioning' under Sex -> Actions. Sex Positioning is a feature allowing you to reposition sex participants and sex objects within the 3D space however you like.