Seems like you might be asking how to be an expert on Clarify.
There's no application process... just...
Answer people's questions.
Hello and thank you for this question. As far as I see, you mean that you wanted to apply as an expert on clarity. You can apply for a job here if you have an account in LinkedIn. LinkedIn is the social network of experts. If you have an account there, you can easily apply for a job as an expert on clarity. If you have no account in LinkedIn, you can sign up there and then apply for a job on clarity.
If you would like what kind of expertize is good for you or have another questions to ask, you can easily request a call with me. I will be very glad to provide you with all necessary information.