To add departments in PDI CStore Essentials follow the steps below:
Step 1: Log into your PDI CStore Essentials account and go to POS Data -> Settings
Step 2: Click on the Department tab
Step 3: Click on the "+" icon on the top
Step 4: Enter the Department ID, Department Name, tax type, department type, is scannable, Day Report Mapping, and Central Pricebook mapping (ONLY if you have Central Pricebook). and click Add department button.
Note: By doing these steps, PDI CStore Essentials will not add departments to your register, you will still need to go into your POS system and add them there as well.
See below links and learn how to add the departments into your POS Systems,
For Verifone Sapphire Systems
For Gilbarco Passport System