To add security questions in WHMCS, you'll need to follow these steps:

1. Log into WHMCS:

   Access your WHMCS admin panel using your administrator credentials.

2. Navigate to Security Questions:

   • Go to "Setup" in the top menu.
   • Click on "General Settings".
   • Select the "Security" tab.

3. Enable Security Questions:

   • Make sure that the option for "Security Questions" is enabled.

4. Add Questions:

   • Scroll down to the section labeled "Security Questions".
   • You can add questions one by one in the available fields.
   • Click the "Add Question" button to add more questions.

5. Save Changes:

   • Once you have added the desired questions, click the "Save Changes" button at the bottom.

6. Client Setup:

   • Now, when clients register or update their profile, they will be prompted to select security questions and provide answers.

Remember to choose questions that are meaningful but not easily guessable. It's also a good practice to advise clients to keep their answers confidential. This adds an extra layer of security to their accounts, particularly during sensitive operations like password resets or account recovery.