Does anyone have some example code of creating a DNN event (to the calendar)?

Currently I am using 5.6.4 and our organization previously used an ASP script to write to a different database to create events. Unlike the DNN system, this other database would create an event (name), and then allow shifts (shift 1, 3 people, shift 2, etc...).. What I would like to is continue using the same interface, but direct it to the DNN database so i can now use the calendar notifications, which we currently don't have.

To Clarify, our input form (which also reads the database to put in previously entered data) looks like this:

Event Name: General Meeting
Location: The Park Downstairs

Shift 1 (8am-10pm)

• John Doe
• Open
• Open

Shift 2 (10am - Noon)

• Jane Doe
• Bill Adams
• Open

Shift 3 (Noon - 5pm)

• Marty Smith
• Open
• Open

So in this case, I would like to use this form to create 3 calendar events (at the appropriate times) and autoenroll the people added when they enter their name.

Management is unwilling to create 3 different events and wants a single form so they can also print it out for an onsite signup.

I don't want to use an addon or extension, I want to use basic DNN code for ease of use, upgrading and Maintenance.