You can view job details if you would like to edit them or see what parts a job requires.
Use the search bar and look for the customer/work address you want to view. (Or search for the job number and select it from the list). You will then see a list of customers/work addresses that are related to your search.
Click on the name of the customer/work address to open their account. In the section labelled 'Ongoing work' click 'View' on the correct job.
You can now see all of the details related to that job, including its overview, diary events, and parts.