1. Send a request to the email: ghginventory@dcce.mail.go.th to create an agency for registration.

2. Once you receive the confirmation email from the staff regarding the successful creation of the agency, register to access the system.

3. Log in and go to the 'API Management' menu to submit a request for API connection.

4. Wait for the approval email from the staff.

5. You can view an example of the steps for using the system in the manual.