This video demonstrates how to create multilingual PowerApps. In other words, PowerApps that render the user interface text in the language the current user's device or browser is set to use.
I learned this pattern from the following blog article on the PowerApps team blog and tweaked it a little bit to create this how to video.
https://powerapps.microsoft.com/en-us/blog/building-multilingual-apps-in-powerapps/
You can get the Book a Room Powerapps Sample Template at web.powerapps.com.
watch?v=He1xOwg1_00