How to withdraw from OKS?

Excuse me, I'm a bit confused about the process of withdrawing funds from OKS. Could you please guide me through the steps in a clear and concise manner? I'm interested in knowing if there are any specific requirements or precautions I should take into account before initiating the withdrawal. Additionally, is there a limit to the amount I can withdraw, and what are the associated fees, if any? Lastly, how long does it usually take for the withdrawal to be processed and reflected in my account? I appreciate your help in this matter.