POS - 'Clear' Button / Warning

In the POS the Sync and Clear buttons are close together and the access to ‘Clear’ cannot be limited by user. 

If accidentally cleared, the sales are not retrievable. 

Ideally, the ‘clear’ button could be limited access by User Role permissions or if this is not possible, to atleast have a big warning appear so that if accidentally clicked, there is still the ability to exit out of the action without permanently losing un-sync'd sales