Hello there, Dimitri6. The QuickBooks Sole Trader Plus plan is designed for one-person businesses and does not support the Payroll feature.
To add this functionality, you'll need to upgrade to a QBO plan, such as QBO Simple Start, Essentials, Plus, or Advanced, depending on your business size and needs.
Also, please note that once you upgrade from the Sole Trader subscription, you can't downgrade back to this product.
If you have additional questions, comment below.