How to reset the assignment date range.
Did you create an assignment and it doesn't appear in the spreadsheet view? The steps detailed here may resolve this issue. You can use the same feature to hide a range of assignments from view.

1. Look in the upper left hand corner of the PG spreadsheet window. If you have set a date range for assignments you will see something like the image to the right.
2. Click on the Prefences button on the top menu bar.
3. From the tab menu, click on Display.
4. In the Assignments section, adjust the date range so reflect the desired date range. Or you may uncheck the box next to "Show only assignments in this date range:"
5. Click the OK button at the bottom of the Preferences window and the desired changes will take effect.