ODAG applications are regular apps, so we can use Section Access into them.
If you use it in your summarized apps, the user will not have access to values that he/she are not supposed to see, so he/she can´t select, so these values will not passed as selections to your detailed app so it´s not necessary to implement Section Access into it.
On other side, if you are very concerned about security you can apply same Section Access code in both apps
