How do I withdraw from my Rollbit RLB?

Could you please elaborate on the process of withdrawing funds from my Rollbit RLB account? Are there any specific steps I need to follow to initiate the withdrawal? Also, are there any fees associated with the withdrawal, and if so, how are they calculated? Additionally, is there a minimum or maximum amount that can be withdrawn at one time? Lastly, how long does it typically take for the withdrawal to be processed and credited to my account?