How to get a FEI number?

Could you please elaborate on the steps needed to acquire a FEI number? Is there a specific form or application that must be filled out? Are there any eligibility requirements that must be met? I'm also curious about the processing time and whether there are any fees associated with obtaining a FEI number. Additionally, would you be able to provide any insights into the importance of having a FEI number for those involved in the cryptocurrency and finance industry?