What you need to do:Create org unit inside ACSCreate security group inside ACSAssign org unit to security groupCreate product profile matching to security group in Admin ConsoleAdd user to product profile in Admin Console

You may refer to _lineStart and _lineCount:https://experienceleague.adobe.com/docs/campaign-standard/using/working-with-apis/global-concepts/additional-operations/pagination.html?lang=en

With the auto-reply, you can only use a static response text, i.e. no personalized/dynamic content is possible here. For a dynamic reply, you may process incoming SMS messages using a workflow (see docu link below) though this won't be in real-time then  https://experienceleague.adobe.com/docs/campa...

Just define a folder or a wildcard for the path. (see https://experienceleague.adobe.com/docs/campaign-standard/using/managing-processes-and-data/data-management-activities/transfer-file.html?lang=en)This will download all matching files and process them in the workflow. Note: files will be processe...

https://experienceleague.adobe.com/docs/campaign-standard/using/managing-processes-and-data/importing-and-exporting-data/managing-packages.html?lang=enThis describes the export + import.The package is a ZIP containing XML + optionally image files.You can modify the XML and then re-import.Though ther...

hm, the only fields available are Label and ID.Unfortunately no additional description field or so available in ACS, also the audience schema can't be extended. You could store some additional info maybe in a custom resource which you link to the audience but it won't be shown on the audience page u...

Unfortunately ACS offers no function for an approval process.Also there is no API to retrieve any template information

In ACS indeed you need to create profiles first.There is no external file mapping or sending to list data in ACS

See my comment in https://experienceleaguecommunities.adobe.com/t5/adobe-campaign-standard/view-organizational-unit/td-p/457484.Depends on what you man with partial data.

It depends on what you mean with "partial personal data".The organizational units only limit the access to a profile.i.e. if you have access, you can see any field on the profile.Unfortunately ACS has no feature to hide or limit access to certain fields (e.g. if you have a field TotalRevenue on a pr...