You're in the right place to look for information about Simple Individual Retirement Account (IRA).
To begin with, are you trying to set up a retirement plan deduction or a company contribution? If so, please refer to this article for more information and detailed guidance: Set up or change a retirement plan.
Once done, you can check out this article from the IRS to learn more about Simple IRA: SIMPLE IRA plan FAQs.
If your goal differs from what I've shared above, please let me know so I can provide the information you need.
Additionally, if you need to add deductions to your employee's payroll, please refer to this article: Set up, change, or delete employee-paid payroll deductions.
I'll be around if you need further assistance setting up your Simple IRA. Keep safe.