See layout "Menu Actions"
Slider tracks are used for the generation of sliding resists on the board or for the generation of contacts when using turnable switches. Clicking this function the following dialog appears:
Press the create button after you set all desired properties. Now the slider track is fixed to your cursor and you can place it with M1. Cut out pieces of the slider track by M1 and [Del] to separate track segments. For the use of turning switches connect the remaining segments to different signals.