I have a requirement to have the following structure: in Kanban Swim Lanes

[Kamlesh Solanki]

• Project
  • Epic
    • Story 1
      • Task 1
      • Task 2
      • Task 3
    • Story 2
      • Task 1
      • Task 2
      • Task 3
    • Story n
      • Task 1
      • Task 2
      • Task 3
    • Epic
      • Story 1
        • Task 1
        • Task 2
        • Task 3
      • Story 2
        • Task 1
        • Task 2
        • Task 3
      • Story n
        • Task 1
        • Task 2
        • Task 3
      •  

Each story should be assigned to a different team member

There are numerous projects

[Bill Sheboy]

Hi @Kamlesh Solanki -- Welcome to the Atlassian Community!

I do not believe there is anything in out-of-the-box Jira Cloud with that level of nesting for swimlanes on a board.  For a company-managed project, the closest things might be:

• Swimlane on stories and use a board filter which orders by project and epic
• Swimlane by queries, and create as many queries as you need for the specific lanes.  This would require updating the swimlane queries manually.

Best regards,
Bill