In Company Settings, there is a feature named Auto archive expired training which will archive training records with an expiry date set. To find this setting, browse to:

Administration -> Company -> Settings -> Company Settings -> Training -> Auto archive expired training

This will archive on the following morning of the expiry date around 08:00 am.

To add an expiry date to your training record, browse to:

Training -> Training records->Actions

Select Edit to add the expiry date

Browse to the Training Outcome section of the page and enter an expiry date

The next day, the training will be in the Archived Training page: