Once you've created / customized your job application form, you can now apply to a specific job.
Go to the Job you'd like to add the form to.
Post the Job
The Job will have to be made Public first.
3. Refresh the page
4. The Job Application Form tab will appear like so:
5. Select the job application form you want to apply to the job:
6. Hit 'Save'
This publishes the form to the Job immediately.
You can see this added to the application form on the job like so: