How add learners to Offering using Spreadsheet Loader.

Summary:

I'm trying to add learners to Offering using Spreadsheet Loader.
I couldn’t find detailed documentation about the exact attributes required for the template.

Could anyone share a template or what fields are mandatory or recommended in order to enroll workers into a Learning Offering using Spreadsheet Loader successfully?

Any insights, templates, or references would be highly appreciated!

Thanks in advance .