You can set up permissions for individual workbooks.

To set up workbook permissions:

Click the File Browser tab at the top of the page..
Click Workbooks in the navigation window on the left side of the screen.
Click the workbook for which you want to edit permissions.
Right-click the name of the selected workbook and select Information or simply click Information on the tool bar.
The permissions setting is listed at the bottom of the Sharing section of the information page.
Select the owner from the list.
Optionally, add groups and set view, edit, and run permissions for the group.
Click Add Group to add additional groups if desired.
Set view and edit permissions for all users.
Click Save.

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