Submission access
Submission access allows form editors to choose who can view and submit the web form. Form editors can make it so that only people who are part of a certain group may complete a Web Form.
For example, you can limit submission access to users who are logged in, to collect data without asking for it within the form.
Configuring Submission Access
From the administration bar, select Workbench, and then select My Dashboard.
 Navigate to the Forms list.
Locate the form you want to configure and select Settings from the drop-down menu under the Operations column.
Under the Settings tab, select the Access sub-tab.
Under Create Submissions, select the types of users who can view and submit the form. Note: Webform submission access defaults to Everyone.
Optionally, specify which authenticated users you would like to view, delete, and/or purge submissions and test the web form.
Select Save.
Available groups
Everyone: Anyone can view and submit this webform.
Users who are logged in: Only authenticated users can view and submit this form.
Users specified by Active Directory groups: Limit and/or prevent viewing and submission from users belonging to the specified Active Directory group(s).
Users specified below: Specify which authenticated users can view and submit this form.
Users who are logged out (for anonymous submission).