APPLY FOR JOB button

Hello,

Can you tell me how can put the APPLY FOR JOB button in my website as your demo ?
Please see the screenshot https://www.dropbox.com/s/hd9rhcmha8xjzba/wpjobmanager_APPLY%20FOR%20JOB_button.jpg?dl=0

Thanks ??

The page I need help with: [log in to see the link]