One-Time Events are best used for events that do not fall into a normal schedule.
Instructions
Sign in to your solution if you have not already
Navigate to the Events module:

Select New Event:

Note:
You can also select Create Event from the Quick Add Menu.

Fill in the information fields:

Event Template: Select One-Time Event
Event Name (required): Enter a name for your event, if desired
Notice: Add any additional information about the event
Event Date (required): Select the date of your event
Event Time (required): Select the time of your event
Address: Add a street address for the event
City: Add the city in which the event will take place
State: Add the state in which the event will take place
Zip Code: Add the zip code in which the event will take place
Click Create Event:

Note:
You can also click the Create and Add New button to save this event and automatically start work on another new event.