I'm just trying to create a general task/tasklist that can be used by any agent. Say, if there is a certain workflow I have for any desk ticket, I want to make sure when the ticket is created, any agent can follow this list of tasks to close that ticket.

In another word, I want to have some tasks auto-created after the creation of the new ticket; and whoever create the new ticket, they would be the owner of the ticket and its associated tasks. I've successfully assigned the ownership of the ticket to whoever created it, but I can't change the ownership of the tasks with automation/workflow. 

I tried the following 3 methods:

1. I tried create a template for tasks/tasklist in Zoho Desk: Failed - this template is not available;
2. I tried to create a task but not assign it to anyone: Failed - task assignment is mandatory field and this feature cannot be edited;
3. I created a task in Workflows - Automate (the task would be created if a new ticket is created) and tried to auto-update the task's ownership: Failed - 

• For creating Field Updates, there is no "Task Ownership" field
• For creating Custom Function, I just can't get the right reference of the field "Task Ownership" (it's not "task_ownership" or "task.ownership", and I don't think I can guess it out (I tried to change Ticket Ownership to begin with and failed. The reference value of "Ticket Owner" is "Tickets.Case Owner" according to Argument Mapping and it is not working after I tried to execute the script of changing the ownership of the ticket))
• From what I can get online, it always involved Zoho Creator and that's the last thing I want to do (it cost money and we don't really use it except this function)

Integrate Zoho Project with Zoho Desk could be a way of solving it but it bring up other questions such as it create the issue/bug list instead of the task list under a task (which complicate all the things); and my boss just want to control the tasks of the ticket in a simple page (whenever we check the ticket, we can see its all associated tasks and progresses).

Any suggestion? I think I can create a lot of duplicated tasks and assign them to different agents, but that just would make the tasks module a total chaos (I can't even create a folder to categorize different tasks).