You can easily switch your camera and microphone in Pencil Spaces to make sure the correct devices are selected before or during a call.
Click the More (⋯) menu.
In Whiteboard layout, it’s at the far right of the video call panel.
In Gallery layout, it’s next to the Settings icon.
Select Audio and video settings.
Use the dropdown menus to choose your preferred camera and microphone.
Click Done to apply your changes.