Login to Top Hat through Sakai.
Access your Top Hat course in your Sakai course site with these directions.
Access the Gradebook in Top Hat.
After logging into Top Hat, select the Gradebook tab at the top.
Sync with LMS
Select the Sync with LMS icon in the top right corner above the Gradebook.
Select items to sync.
Select which items to sync with the Sakai Gradebook by checking the boxes and/or using the arrows to select items in a folder. When ready, select Sync with LMS.