You can manage your phone numbers from Plivo console and from Meta WhatsApp Manager.
In Plivo console (below), you can view all the phone numbers that are linked to your WABA and crucial information about them such as Status, Name Status, Quality Rating.
Status can be any of these values - Connected, Pending, Disconnected. You can only send messages if a phone number is in Connected status.
Quality Rating indicates the quality feedback for your phone number depending on feedback provided by the recipients. You can read more here.
Name Status provides the latest feedback on the display name against this phone number. You can manage this from Meta WhatsApp Manager.
You can unlink a number from Plivo Console.
You can also manage your numbers from Meta WhatsApp Manager.
You can view the Messaging limits provisioned against your phone numbers. This is maximum number of customers you can reach out in a day. This will be increased as your usage increases and if get consistently good feedback from your customers. You can read more here.
You can configure how your message appears to your WhatsApp enabled recipients by clicking on settings.
In this screen, you can configure