Currently, CM1 does not support submission (approval or rejection) of multiple items at the same time. When individual pages are submitted (or approved), all content that resides on that page will also get submitted or approved automatically.
However, CM1’s Bulk Upload Gadget provides the ability for users to Bulk Approve items when they are being uploaded into the system.
One option to ease submitting multiple items is using the ‘Page By Status’ gadget. This enables each item in the desired State (pending, review, etc…) to be listed on the Dashboard. You can navigate to each item from there, edit, and move it into the desired state.
More information at: