summarize follow paragraphs.

Prices customers will pay for their reservations. Your customer will be purchasing Azure reservations based on a subscription you previously bought for them in your CSP partner billing account. The customer's price for any Azure reservations they purchase based on this subscription is also set by you. This price may be different from the Web Direct price the customer sees in the Azure portal.

How customers can optimize their use of a reservation. Some customers might benefit from learning more about how to optimize their use of a reservation or how to assign a reservation's initial scope during their purchase. For more information, ask customers to read Manage reservations for Azure resources.

What happens when a customer purchases a reservation with a shared scope? When customers purchase a reservation based on a prior CSP subscription and assign a shared scope to that reservation, any discounts the customer has been given by you'll apply to matching usage for all subscriptions that you've purchased for that customer.

What should customers do if they want to exchange, cancel, or renew a purchase they have made, or change the initial scope of a reservation? Customers need to ask their partner to help them change a reservation's initial scope. They also need a partner's help to exchange, cancel, or renew a reservation. They can't perform these tasks themselves with reservations based on subscriptions purchased for them by a CSP partner.