Resource:
Lawn Darts Wikipedia Article - https://en.wikipedia.org/wiki/Lawn_darts
Resource:
Enabling Product Scheduling - https://help.salesforce.com/articleView?id=enabling_schedules.htm&type=5
Resource:
Establishing Quantity and Revenue Scheduling on an Opportunity - https://help.salesforce.com/articleView?id=enabling_schedules.htm&type=5