Professionals apply for jobs based on the specific details including date, time, location, hours and skills. As a result, it would not be fair to change the job after a professional has applied to an office's job or been hired for it in the Stynt platform.
There are two options for an office if a change needs to be made.
1) If there are changes to your job you are able to cancel and repost if a hire has not been made.
2) If a hire has been made the office is able to contact the professional to see if they are able to commit to the differentiated schedule/job. If the professional is not able to take the new hours the job would then need to be cancelled and reposted.
(** Note that if an office needs the professional to start earlier than the agreed upon time, the professional will not be able to punch in until the start of the initial job and the office will need to adjust at the end of the day)