You may need a 3rd party app to do so and integrate it with your QBO account.  It is allowing your clients to choose from up to three pricing options directly within your proposals. Clients can simply choose the proposal option that best suits their needs, enter their payment details and sign - all in the one place.

@Fiat Lux - ASIA any recommendations of a 3rd party estimating service or app for that? Square has it but it's clunky and integration with QBO is limiting.

@Velodro 

Explore this app

https://get.practiceignition.com/quickbooks

The feature is still in Beta and you have to apply separately to use it. Once you have decided to use the app, contact us in private prior to subscribe it. We may help to ask the developer to activate the feature on your account.