By default, the multi-chain IK solver is not available.
To create the ikMCsolver node for your IK handle
- In the Script Editor or Command Line, type the following MEL command:
createNode ikMCsolver;
- Press Enter on the number pad.
A new ikMCsolvern node appears in the dependency graph.
This solver is now available from the Joint Tool, the IK Handle Tool, and the Attribute Editor for any IK handle.