Download the Point of sale & Linkly application from the app store and log in to your Erply account.
Go to POS Settings -> Configuration -> Select Payment configuration -> Setup Payment Gateway. From the dropdown menu select Naitive wrapper (IOS/Android).
You will see Linkly/EFTPOS payments setup menu
Fill out the credentials that Linkly has provided to you (Username, Password, Pair Code etc)
Press Activate and Update.