Allow me to share some information about filing Form 941-X in QuickBooks Online (QBO) Payroll, Larysa.
Please note that QuickBooks Online Payroll does not support the filing of amended or corrected forms. Any changes to this tax form must be completed manually, processed, and sent to the IRS.
Since copies of the forms are available on their website, you can refer to this page for guidance on downloading a copy of Form 941-X: About Form 941-X, Adjusted Employer's Quarterly Federal Tax Return or Claim for Refund.
Feel free to reply below if you have any other concerns related to QuickBooks.