Open your preferred web browser (Firefox, Internet Explorer, Edge, Google Chrome, etc.) and log onto Moodle via the Bishop's university website.
In the Course overview section, locate the course you would like to see first. Then click on the arrow-cross, in the top left corner of the course section, and drag that course to the desired location.
When your courses are in the order you want, you can change the number of courses to display by selecting the number from the drop-down menu.
Click the "Stop customising this page" button in the top right corner once you are done. Note that changing the order of the courses in the "Dashboard" does not change the order in the "My courses" section. Unfortunately, this is the only way to reorganize your courses for easier access.