“Floating” bones provide a way to use Physique without using a biped character. The Floating Bones rollout specifies the splines, bones hierarchy, or unattached bones you are using to deform a mesh. For example, Physique lets you animate a mesh by animating spline vertices or a bones system. When you attach the spline or parent bone to Physique, it creates envelopes for the selected spline or bones.
To have a spline influence a mesh:
3ds Max opens a Select Bones dialog.
Displays a Select Bones dialog so you can select splines or bones to use with Physique.
Resets splines or bones in their initial position: Reset reassigns vertices, but leaves envelopes as is.
To delete a spline or bone, click to highlight its name in the list, and then click Delete.