ChemDraw: How can I remove a monomer from the HELM monomer user library

How can I remove a monomer from the HELM monomer user library?

If you have ChemDraw Professional 21.0 or above, please select  Show HELM Monomer Toolbar from the View menu and then click the Manage Monomers button.




It will open the following dialog box, select the Library as User and the desired Type and finally select the Monomer library that you want to remove. Then click the "Deprecate" button.