Unfortunately, you can't do this through JobScore. Each job board has unique rules about editing job postings, and some job boards don't support edits.
We encourage you to closely review and edit your job advertisements before posting them to job boards. The best practice we suggest is first put the job posting on your careers site for you and your team to review. Once they have reviewed and signed off that the ad looks good & that they're ready to refer it to their friends, then post it on job boards.