If you use the Paygistix payment gateway for your credit card processing, you may find the credit and debit card buttons on your Sales Screen unnecessary. If so, you can disable them easily through your Workstation Settings. To access your settings, do the following:

PayGo 6.0: Click the Admin Central button on your Menu, which will take you to the Admin & Settings screen. From there, you can click the Workstation Setup button at the top of your screen. This will open the Workstation Setup screen. 

PayGo 5.9: Click the Settings & Options on your Menu Screen. This will open a sub-menu, where you can click the Workstation button. This will open the Workstation Setup screen.

PayGo 5.6 and Below: Click the Workstation Setup on your Menu Screen.

On your Workstation Settings screen, click the Settings tab. Be sure to select Creditcard from the selections directly below the Settings tab. On the second line in the Param (parameters) box will be a field titled param_cc_buttons. On that line, you will see a drop-down menu:

C=Credit

D=Debit

CD= Both

N=No command sent

Select the N, and then click Done or close out of the screen. Your selection will be saved.