Proof to be submitted while registering to become a Charterholder

How To Become a Charterholder

https://www.cfainstitute.org/programs/cfaprogram/charterholder/Pages/index.aspx

I want to know when you apply for your Charter, will the Institute ask for an experience letter (a written document/certificate stating your designation and time period of your employment) from your current/previous Employer.

Interesting, is there a time limit to submit it too?