Call Routing Schedule is managed in the Contract Window.
From the Main Menu, Click on Advertisers -> Contracts -> Contracts
Click on a Contract Name to open the Contract Window
From the Contract Menu, click on Settings -> Repeat & Returns.
Repeat Calls Days: Number of days to consider a call is a repeat call.
Transfer Repeat Calls: Wether you want to transfer the repeat call to the contract or not.
Repeat Billable: Wether you want to bill for repeat calls or not.