To create and view application custom field in Workday, follow these steps
Search for 'Create Custom Object'
Create Custom Object
Click 'Field Definitions'
Click 'Add' button
Enter Label & Field Type
Select 'Candidate Date: Job Application'
Review and Confirm
Configure Field Selection
Activate Custom Object
Click on 'Menu'
Click 'Recruiting'
Click on 'Find Candidates'
Access Job Application Actions
View All Additional Fields
View Newly Created Custom Field