Need to assign resource instance to WO

Summary:

I create a new custom role for Engineers, and need to assign resource instance to a work order in Manage Maintenance work order form, however i already added in a Function security policies (Assign Resource Instances to Work Orders) but unforently not displayed as original Maintenance manager role

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

25A (11.13.25.01.0)

Code Snippet (add any code snippets that support your topic, if applicable):