To sponsor a post with Indeed, you may first choose to include your Indeed account information into Crelate. To do so, you may navigate to Settings>> Show Advanced Settings>> Portal (all the way at the bottom of the page).
This will prompt you to enter in the email address associated with your Indeed account.
To then publish that job and sponsor specifically with Indeed, navigate to your job and select the 'Publish' icon located in the top right-hand corner of that job.
Scrolling down in the 'Publish' section (roughly 2/3 of the way down your page) you'll notice a section to 'Post' that job.
You may then select from 3 'Sponsorship Types' with Indeed. For more on Indeed's sponsorship options, you may navigate to this link: Indeed Sponsored Jobs