in-service
adjective [ before noun ]
uk/ˌɪnˈsɜːvɪs/ us/-ˈsɝː-/ HR, WORKPLACE
used to describe training done during your time at work, to learn new skills, etc.:
Most of the company's in-service training is done in house.
I had the pleasure of giving two presentations to the staff during their in-service day on December 14.