Experts get paid when you request a payout. You probably might get a section pop up to enter your info

Clarity has kept it simple. When requesting a call with an expert, you will be prompted to provide your credit card information. You will be charged at that time for the initial call amount based on the rate and duration scheduled.
Following the call, charges will be adjusted based upon the expert's rate and actual length of the call. (not the approximate length you entered for the call request) minus any promotional codes entered. The member will be billed for any time that the call runs over beyond the original scheduled time or credited any balance if the call runs shorter than originally scheduled. To add a payment option, simply go to Account > Settings > Credit Card.
Besides if you do have any questions give me a call: https://clarity.fm/joy-brotonath

Experts get paid based on projects, where the expert can bring his know-how or experience to a client.
This info that the expert can bring is the value and the client pays for the knowledge or experience of the experts.
This info for the client is very useful for their business.