When you purchase a single job credit (for example, to post one job in San Francisco, California) you can immediately create a job description and post the job. However, if you purchase multiple job credits (for example, three job credits in San Francisco, or one job credit in San Francisco and one in Chicago), you will need to check out first, storing the job credits, before you can use any of them. After completing the purchase, you can select a job credit from your account, create a job description and post the job.