You can update employees jobs in one go, by uploading a template with this information.
To do so, navigate to your Manage Members tab, selecting Admin > Manage Members.
Choose the above unit, and unit from the filters available.
Once you set the filters, two icons will appear on the right corner of your page.
Click on the icon to download the template.
Fill in the document with all necessary information, and select the left icon to upload the updated file.