2a) Maintenance job overview...

To get an overview of all the maintenance jobs, one simply switches to the schedule table. Here the jobs are shown in a listed way so that you can see easily which jobs are to be done, which are done and which are overdue.
 
All jobs in the schedule overview table (done or not executed) are visualized as hyperlinks via an icon (circled exclamation mark or green tag). A simple click on the icon and the user will get detailed information of the specific maintenance job. At the bottom of the table you will have a summary of all jobs. The user is also able to choose the time period for the overview of the jobs. For example how many jobs are due in the current week or in the next four weeks.

Depicted in the screenshot a period of one week was chosen. The current day is underlined. Thus all jobs which are on the left side of this day are overdue and jobs positioned right from this day are to be done.