When to lay zeon Zoysia sod?

Could you please clarify when the optimal time is to lay zeon zoysia sod? I understand that timing is crucial for successful lawn establishment, and I'm curious if there are specific seasons or weather conditions that are more favorable for this particular grass type. Also, are there any preparatory steps that should be taken before laying the sod, such as soil testing or amending the soil? Your expertise in this area would be greatly appreciated.