How to set up an ator relay?

Excuse me, could you please elaborate on the steps to set up an ator relay? I'm new to this and I'm a bit confused about the process. I understand that it's an important aspect of cryptocurrency networks, but I'm not sure where to start. Could you guide me through the process, step by step? Perhaps you could also explain the significance of an ator relay in the broader context of cryptocurrency? Thank you in advance for your help.