Eric Eric: There is no one single answer to this. It depends on your situation, on your staff, on your organisation. 'Common practice' varies depending on the size and type of environment. I worked in a high school of 950 students and 50+ teachers and I was responsible for training along with my regular job of teaching languages. In a university of many thousands, there might be a whole dedicated team of specialists who will run training sessions. In a small organisation of under 100 it might be the main admin on their own. In other organisations they might employ an external person or team such as from a Moodle Partner.
This is really not a question that can be easily answered.
This is really not a question that can be easily answered.