The Explara event manager Mobile app is primarily useful for Entry scanning.
However, it is also being used for POS, i.e selling ticket at the venue. But there is a caveat when you sell tickets at the venue using Event Manager Mobile app. The validation of any sort will not work at all when it is used to sell tickets.
So if your event has any sort of validation, whether Member validation of any user defined validation, please avoid using Event Manager Mobile app for POS purpose.