Manage ACL via API

I am creating surveys in my app via the API. I am having one problem. When I create the survey, I am using a generic UN/PW. When other users log in they are not able to view this survey. All these users are part of the same group. How do I all members of these groups to see surveys created by other groups.

I have found how to do this in the Checkbox web app by clicking on the survey then the permissions link and then clicking the "Advanced ACL Editor" button.

Thanks for the help in adavance.