This article covers how to use the Annotation Grading interface and the Marking Workflow.
Annotation and Grading
Back in 2016, the Moodle's Grading interface was redesigned to provide a faster, more convenient flow for marking Student assignments. The improved grading interface makes it easier to annotate student documents on the screen, right inside Moodle.
Note: If "Annotate PDF" is enabled in an assignment activity, eLSupport recommends that you restrict file submissions to only allow Adobe PDF files. Other document formats (such as Microsoft Word) may no longer work with the annotation grading interface. (A back-end document conversion tool is old and no longer compatible with VCC's current version of Moodle.) Adobe PDF files do work reliably in the annotation interface. Most desktop document applications provide a way to save to the Adobe PDF format.
This brief video from Moodle HQ introduces the grading and annotation screen, and describes how to use it:
The second video shows a wonderful improvement that came into effect as of Moodle version 3.3:
Viewing Many Attached Files
If the Student has attached more than a few files as part of their submission, or if their submission contains one or more embedded videos that take up more screen space than is available, the grading interface will display a "+" icon ("View more"), indicating that not all items could be displayed at once. Click the "+" icon and all available files will be displayed.
Marking Workflow
For Assignment Activities, Moodle's Marking Workflow lets you control the release of grades to Students manually or according to a schedule.
In this video, Online Developers Heidi and Venecia describe the basics of using Marking Workflow:
This features is described in more detail at Moodle.org:
https://docs.moodle.org/39/en/Assignment_settings#Grade:~:text=Marking%20(grading)%20workflow