How to use Snapshot type Plan? How can I associate Snapshot type Plan to charge?

Hi Morpheus Support Team,

I have created Snapshot type Plan.

I am unable to use this Plan to charge when a user take snapshot.

How can I associate this plan to an Instance so that when a user take snapshot the user charged according to my custom plan?

Please Guide, any helpful guidance will be commendable.

Thank you in advance,
Basharat Hussain.