docs: toggle submissions table

Instructor-Guide--Assignments--Marking--Grading-View.md

@@ -81,6 +81,7 @@ From here you may:
         - Select a criterion from the dropdown and click the "Add Criterion Filter" button. The criterion will show up on the list below.
         - Specify min and/or max values to define a range for that criterion.
         - Add more criteria if needed.
+    - **Navigation Scope**: Graders with the **Manage submissions** permission can use the **"Only assigned submissions"** checkbox to control which submissions the "Next" and "Previous" buttons navigate through. When checked, navigation stays within submissions assigned to the grader. When unchecked, navigation can move through all submissions for the assignment. Graders without this permission remain limited to their assigned submissions and do not see this option. Instructors continue to navigate all submissions.
 
 All options will be restored to their default states when the "Clear All" button is clicked.
 After the modal is closed, submissions navigable using the "Next" and "Previous" buttons from the

Instructor-Guide--Assignments--Marking--Set-Up.md

@@ -36,6 +36,8 @@ If students are not allowed to work in groups, then under the "Group" column you
 - The **"Total Mark"** column lists the group's mark once a grader has started entering marks for the assignment (default is 0).
 - The **"Tags"** column lists any tags created for the submission.
 
+Graders with the **Manage submissions** permission can view all submissions for an assignment from this table. These graders can use the **"Display assigned submissions only"** checkbox to switch between all submissions and only the submissions assigned to them. Graders without this permission remain limited to their assigned submissions and do not see this control. Instructors continue to view all submissions.
+
 ## Collecting an Assignment
 
 Before you may being grading an assignment, you must first collect the submitted files from each group. To do this, make sure you are on the "Submissions" page of the assignment you wish to grade and select the checkbox(es) of the groups from which you wish to collect. You may also select the box at the top of the column to select all groups. Once satisfied, click on the "Collect Submissions" button to begin collection.

Instructor-Guide--Users.md

@@ -92,7 +92,7 @@ The "delete" link will remove the user from the database and the "edit" link wil
 By default, graders are not allowed to do anything other than view and grade student submissions that they have been assigned. If you would like to allow certain graders to do more on MarkUs you can select the checkboxes under "Grader Permissions":
 
 - Manage assessments: Grader can create/update assignments
-- Manage submissions: Grader can collect submissions and release/unrelease grades
+- Manage submissions: Grader can collect submissions, release/unrelease grades, and choose whether to work with all submissions or only submissions assigned to them in the submissions table and grading view.
 - Run tests: Grader can run automated tests
 
 ## Sections