Once the local machine has been configured for Hybrid Execution and has been added to Testsigma Account as a System, you can readily start executing Tests on it.
Refer the article Quick setup guide - Setup TestSigma Agent on your device for Hybrid Test Execution(Windows/Mac/Linux) for more details on configuring the local machine.
Refer the article How to add/edit/delete System? to learn how to add the machine to Testsigma Account as a System.
Using the System
Select the Test Lab Type as 'Hybrid' and then select the added System from the 'Machine' list.
Select the Test Lab Type as 'Hybrid' and click on 'Select Test Environment'.
After that, select the added System from the Machines list as in case of Dry Run.
Note: The Machines shown in the 'Machine' list depends on the currently selected Application type i.e if you are creating Web Application Test Cases, the Machines list doesn't show added Systems with the 'Platform' selected as Android/iOS.