Resource Types can be added to the Library from Design Mode, or through your Process Library. To add a Resource Type via Design Mode, select the "Create New Resource Type" option when searching for Resource Types to add to step.
If the new Resource Type is a child of an existing Resource Type, search for the desired parent Resource Type and click on "Create Child" in the description section. Linking Resource Types together help create a controlled ontology across all Resource Types in the library.
For additional options when creating Resource Types, create Resource Types in the Process Library.