Hi Jan
as you are working with entry templates, I assume that the IBM Content Navigator is used as the front end.
In ICN you can only add one content element with the standard widgets. With the viewer you can display multiple content elements (https://www.ibm.com/docs/en/content-navigator/3.0.x?topic=desktops-configuring-multi-content-documents).
Inside the ICN you should have a look at the merge and split function for already stored documents (https://www.ibm.com/docs/en/content-navigator/3.0.x?topic=desktops-configuring-merge-split).
If you want to file documents via the ICN with multiple Content Elements or merge multiple PDFs into one file before storing, you need to implement a custom PluginAction with associated PluginService.
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Christoph Sünderkamp
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