Setting Quiz Dates in a Course with Multiple Sections
To add different dates to a quiz in a course with multiple sections, access the quiz settings under “Availability Dates & Conditions” and click the Manage Special Access button.
Next, select Allow selected users special access to this quiz, then click the Add Users to Special Access button to add the students.
Configure special access according to your requirements. Then navigate to the "Users" section to add the specific section to the date you just configured.
From the "Users" section, click the View By drop-down menu, select Sections, then click the Apply button.
Click the checkmark to the left of the first name column to select everyone in the section.