From either the Details tab or the Summary/Notes tab under Academic Summary:
1. Open the GPA section (on the Details tab only).
2. Select the Columns tab and open the column for the marking column to change.
3. Select the decimal places Decimal Places drop-down. To include trailing zeros, mark the Show Trailing zeros checkbox.
4. To turn off rounding completely, unmark the Round result up at checkbox. The resulting value will then use the Decimal places setting to determine the number of decimals to display, but the result will not be rounded.