FPM / POWL: Add available Fields to Navigation Panel at FIS_FPM_OVP_TRIAL1

Hello Experts,

I am facing the following problem for the FPM Application FIS_FPM_OVP_TRIAL1:

https://fioriappslibrary.hana.ondemand.com/sap/fix/externalViewer/#/detail/Apps('F0996')

I want to extend the navigation panel on the left side and add some additional (custom) fields.

I've found the BADI FPM_BICS_NAVIGATION but I am not quite sure if this is the right function.

Is there any way to extend the navigation panel for FPM/POWL applications?

Thanks in advance!