Job details can only be edited when the job is still pending, and cannot be edited once an agent has been assigned and the job has started. If needed, you can communicate with the assigned agent through the built-in chat function.
Editing pending jobs
Click on ‘Manage jobs’ (+ icon) on the left, and select pending jobs.
Click on the job you wish to edit and click on the three dots at the right corner to see ‘edit job details’.

However, do take note that any adjustments to the pricing of the job will not affect the offers you have received and the wages of the agents you have already assigned prior to the change.
If you wish to add new shifts to your job, you can also do so by clicking on ‘add new shift’.

Do note that you will not be able to change the current job shifts.
Click ‘save changes’ and you’re done!