Integrating iPads into Websecurity setup

Hello everyone,
we are currently deploying iPads into "the wild" using a deployment tool.
A problem with this tool is, that it does not allow to set credentials for the proxy settings.

Our ASG is currently running with WebSecurity in Standard Mode using AD-SSO

We were now wondering, if we could solve our issue with the deployment software by setting the ASG WebSec to Transparent Mode AD-SSO.

Would the VPN credentials of the iPad be passed to the WebProxy?
Or would the iPad try to access the Web without any credentials?

Thanks for your help :)

Best regards
chas0rde