1. To begin, Click on "Settings."
2. Afterwards, click on "Custom Fields".
3. Click on "Add Field".
4. Click on "Phone".
5. Now, review the structure in the preview section.
6. If satisfied, click "Next" to proceed.
7. Enter a name in the "Field Name" section.
8. Use the drop-down menu to select a "Group."
9. If needed, add a placeholder by clicking the appropriate option.
10. Another drop-down menu will appear for object selection.
11. If creating a form or survey, add a prefill value.
12. After that, click on "Additional preferences".
13. If you require a unique key, click to customize it.
14. Give your new custom field a description in the provided space.
15. Finally, click "Save" to confirm your settings.
