Ebt aka snap is a card swiped by the guest. You don't have to do anything. If it is the guest's first time using it, they might be a little confused by their options. The food part of the card is called snap on our pin pad. Sometimes a guest will ask you to put in a specific amount. Some people have cash benefits (formerly known as welfare) which is why there is a cash option.
WIC is super easy. The guest swipes their card. You will have to press next on your screen a couple times.
If someone writes a check, they have to fill it out. You process it by pressing check, follow the instructions, and feed it through the check reader face down. Formula checks are processed by hitting rebate check and following the instructions.
If you need help, turn on the blinking light. If you turn the switch up to turn the light on, you would turn it down to make it blink or vice versa.
At some point someone might try to scam you by telling you they have a "cash card". They will tell you to press cash. DO NOT do this. Only press cash when given actual cash.