Supports locked to curve

When setting up a support, you are given the option to restrict a points’ translation to each plane and if you restrict all three planes, you are essentially locking it to a point. So there are options for both planar and point locking but I am wondering if it is possible to lock a support to a curve or linear element; essentially allowing it to slide anywhere on a curve?

Hi, at the moment, it is not possible to allow a support to move along a curve. Basically only vectors are permitted.