Skeleton > Connect Joint
Lets you specify whether to create a new bone between the selected joints upon connection, or just combine the selected joints.
Mode
Select one of the following options.
Connects the selected joints and moves the joint chain of the first joint to the position of the second joint. After connecting the joints, use Remove Joint to delete the extra joint. See Connect joints.
Connects the selected joints by inserting a new bone between them. Connect joints.
