Yes, you can! Thanks to a new feature as of April 2015 you can now set custom dates for specific assessments for individual students.
This feature could be particularly useful if you have students that are completing assessments/assignments at various times or for differentiating your evaluations.
In the Grade tab, simply double click on a score to open the Score Comment dialog. From here you can set a custom date for this student, on this assessment. This new date will be used for any time based calculations if applicable (Power Law, Decaying Average, Most Recent) for this student/assessment only and will show as the date of record on their reports without affecting the date for other students.
Here's a closer look:
We're excited to hear your feedback on this new feature! Please feel free to comment below or reach out to email@example.com