Learning assignments - how to use custom fields to filter population

Summary:

Our client asked us to filter population with custom fields.

Content (please ensure you mask any confidential information):

Hi to all,

to create a learning assingment (voluntary o required) in the second section called "Select Learners" we need to create custom fields to filter the population. Is it possible to use custom fields linked to the organization informations without "Analysis Report Criteria"?

Thanks.

Version (include the version you are using, if applicable): 24 A

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