Intune Device Kiosk

Hi,

I'm fairly new to using Intune and Autopilot, my company have several old laptops that we want to utilise as training laptops across multiple business units, We currently use M365 with Intune/ Endpoint manager.

I am looking to set these up as kiosk devices so they are restricted to 1 or 2 applications and want to have everything managed through Intune. However I can't seem to find how to best set this up. 

Would it be best to purchase a licence for 1 user and then log that user onto multiple devices or is possible to have multiple devices using 1 Intune device licence. 

Thanks