From Celoxis

To fill time while updating task progress:

1. Go to your Project.
2. Click Tasks from the list of project specific reports view.
3. Point at a task and click the action drop-down , and then point to Progress and then click Advanced..

4. In the %* box, type the % Complete.

   If the % Complete box is grayed out, it means that the task progress can only be updated via the time-entries.

5. In the Hours box, enter the hours as HH:MM. You can pick appropriate timecode from here. 
6. Selecting/De-selecting the Send for Approval will Send or Save the time-entry accordingly.
7. Enter update comments in the text area provided.