Hi Monika,
are you aware of the fact that configuring the solution via the "manage your solution" app is currently not the recommended way by SAP? Please have a look at the SAP note 2234180.
In case you want to leverage SAP Best Practices for your implementation, this is of course possible. You can activate the available pre-configured SAP Best Practices processes in your system. Further customizing can be done via the IMG. For this procedure please have a look in the on premise admin guide for FPS01: Administration Guide for the Implementation of SAP S/4HANA On-Premise Edition (1511 FPS1)
Best regards,
Susanne