Yes, the Player Desktop app allows you to select any compatible webcam currently connected to your PC.

Selecting which camera to use
You can select the device in two ways:
In the Studio, click the webcam icon on the top right. The selected device will have a checkmark next to it.
In the Studio settings, in the Devices tab. Under Webcams, open the dropdown list and select from the list of available devices.

Adding a camera widget to your scene
To have your webcam appear on your stream or recording, make sure that there’s a Camera Source widget in your Scene.

If there's none, go to the Scene’s Editor and add the camera by going to Add widget > Sources > Camera Source.