How do I add / allow tip while accept card payment?

To add/accept Tip, follow the below steps:  

1. Launch the FacilePay App  

2. Tap on Menu icon -> Tap on Settings  

3. In   General section, you can see the "Tip".

4. Tap on "Tip" switch    

6. Tap on "Save" button

Now onwards, you can able to see Tip filed while accepting card payment.