The Sharing tab of the Properties dialog box is available to users who have the necessary rights to share the dashboard. It allows you to change user access to the dashboard. Users and User Groups given access to the dashboard can use the dashboard at the access level assigned.
If the dashboard is currently being shared with users or user groups that do not have access to all of the data providers assigned to the dashboard, a yellow warning banner is displayed along the top of the Choose people to share this dashboard with dialog box.
Click the underlined word here to display a list of the users and user groups that do not have access to certain data providers. From this list, you can grant access to these users and user groups by clicking the check box near their name. Click OK to close the list. To add users and user groups to data providers, see Changing the Properties of Existing Data Providers.
To add or remove users or change the access levels for users or user groups, see: