Like any organisation, where a position becomes available encouragement is offered and assistance provided to follow your interests.
From what I can tell, it is relatively 'easy' to move up in our organisation for those who are willing to put in the effort and time.
Not sure yet. Hopefully easy!
I am unfamiliar with promotional opportunities.
Management are generally looking for people with high quality transferrable skills - if you are good with people and achieving positive outcomes you will be targeted for promotion