Tip Payment Guidance on Freelancer

I'm seeking guidance on how to pay a tip to someone on the Freelancer site. This is intended as a one-time tip for a freelancer who has completed work for me. I would appreciate detailed instructions on the process to ensure the tip is sent correctly and efficiently.

Key Requirements:
- Step-by-step instructions on tipping through the Freelancer platform
- Information on any fees or conditions associated with tipping
- Tips on ensuring the freelancer receives the tip promptly

Ideal Skills and Experience:
- Familiarity with the Freelancer platform and its payment processes
- Experience in handling financial transactions online
- Ability to provide clear and concise guidance