Can you help me to see if AMELIA can be used to handle "volunteers" for events? and  the department of where they would volunteer as a "non-public" service. 

I can try to further explain the use model. I cannot provide screenshots because I am not sure how to do it.. 

I have a client who is a NGO and they do retreats. In those retreats I know I can use EVENTS in Amelia to schedule and for attendee bookings. Each Event will require at least 7 volunteers in a team. we would like to break up the volunteers into ROLES in the event. (i.e. host, usher, facilitator, kitchen, etc). I know by description alone it does not match, however can we use AMELIA to accomplish this using Employees as the volunteers (obvious translation) but then use NON-Public services attached to the employee to know what function they fit in? i.e. create a service called "usher" with no pricing and assign to Employee Joe. Then assign Joe who has usher as the service he provides added to the event and block out his time during the event on the calendar.