How to use add-ons
First go to Administrator > MasterFile > Add-ons
Press on the cross located on the top right hand side of the screen ( beside the edit button )
Next Press the i button located on the right ( red square )
Next tap on the cross ( red square ) which will then open the new add-ons items section
In SKU press the square button and select the item that needed to be in the add on ( in this case is steak )
For the Adjust price ( per qty ) just put in 0 , ( in the case if you wish to charge the customer extra for other add-ons like extra fries , extra condiments etc , then you can input the price here )
After input all the relevant information , Press Save
Next go to the ordering section , order a burger and press on the item to add-on
Press on the Select Add-ons and choose the doneness level that the customer require
After this just press Print to kitchen