Is there any documentation detailing how to use each available Condition Tasks of Vacation Rules

Summary:

Our client has a lot of complicated requirements from the managers for their vacation rule set up. There seem to be a lot of options in the MyRules section that can be used to customise rules based on the need, but we are unable to find any document that details how these can be used. Is there any document from Oracle that we can use to understand how the MyRules can be customised using the "Basic", "User", "Advanced", "Time" and "Custom" Tasks? Especially if there is some documentation on how Custom can be used that would be very helpful. Thank