1. Log in to the Back Office

Go to login.gpos.co.th , enter your email and password, and click Log In.

Click Marketing > Item Marketing.

2. In the Discount List page, click “+ Create” and select “Category Percent Off.”

3. Enter the Promotion Name, such as “10% off food.” The name should clearly indicate the discount type and percentage for easier management later.

4. You can choose between two options

• Always Valid – The discount is always active with no start or end date.
• Custom Time – Specify the start date and end date for the discount period.

Example : The discount is valid from October 1, 2025 – October 31, 2025.

5. Choose how often the discount will be active

• Day – Available daily.
• Week – The system displays days Monday–Sunday. Tick the desired days.

Example : Selecting Sunday means the discount applies only on Sundays each week.

• Month – The system shows days 1–31 of the month. Select the applicable dates.

Example : Selecting 1 means the discount applies on the 1st of every month.

6. Choose how the discount will be applied by time

• All Day – The discount is available throughout the day.
• Specified Time Slots – Specify up to five time slots by setting a start time and end time.

Example : Valid between 6:00 PM – 7:00 PM.

7. Choose dates when the discount cannot be applied

• None – The discount works normally on all specified days.
• Specified Date – Specify up to five date ranges where the discount should not be used.

Example : October promotion excluding October 10.

Note : The “Available Every,” “Available Time Slots,” and “Unavailable Dates (Holidays)” features are available from version 2.2.1 onward.

8.Click “+ Add” to choose product categories that will use this discount.

9. After saving, the system will display the selected categories. Enter the discount percentage for each category. To remove a category, click “Delete.” Once all details are filled in, click “Save” to confirm and create the discount.