Extend UI of CEI - Audience Discovery and Targeting

Hi all,

is it possible (and when yes, how), to extend the user interface (SAPUI5) of the ADT, part of SAP Customer Engagement Intelligence (CEI) ?

For example, we want to extend the controls visible or add additional panels:

As far as I know, the user role menu customization (TA LPD_CUST) is used to customize the application Navigation bar an it's entries:

I have tried to connect with the SAP HANA Development Studio to access the repository. I would have expected, that the UI5 Project would be organized there?

Thanks and best regards,