Hi @Teresa2023, I was able to confirm that the short answer is that it’s possible. You can associate a Certification to an External Training, and expiration dates for Certifications can be set to any custom recurrence of days, weeks, months, or years. The Completion Date of the External Training record will be used for the Issue Date of the Certification.

You can also check out these informative articles:

Activating and Managing the External Training App

Managing the Certifications and Retraining App

Hope this helps!