While setting up a Licence item, if you change the billing schedule from monthly to any of the other options, the product's list price becomes the price charged for the selected period. So for example, if an office is set to the price of £1000 and you set it to a quarterly schedule, then Operate will charge £1000 per quarter.
You can see the product record for exact pricing information and you can adjust the price manually if required.
To learn more about managing products, please see Operate Product Types and click into the article referring to the product you need to edit = either an Office or a Service.
To learn more about setting up Licence items, please see Adding Offices and Services to a Licence in essensys Operate.