If i well understood:
I have pipe and node 10. At node 10 i have a shoe (+z support) having friction 0.3. In system there is no node 14. In node 10 i insert cnode 14. In node 10 i also insert displacement for node 14.

More, if i have many nodes where same displacement apply, i will insert in all nodes the cnode 14 but i will set displacement for node 14 only in one node (examoke node 10).