1. Click on the icon in the upper right hand corner to reveal a dropdown menu, then click on 'Settings':
2. In 'Settings' under the 'General' tab click on 'Go' to set up a custom field:
3. Click 'Add' to add a new Field:
4. Enter 'deadlinetext' in the provided field and select 'Text' as the type:
5. Click 'Save this Field'
If you have any questions, please let us know at email@example.com.