This post will guide you through all steps necessary for the initial configuration of NetWeaver Development Infrastructure (NWDI) and its integration with SAP MII. After all configuration steps are done, you will be able to enable NWDI feature via SAP MII Home Page and use NWDI powered processes.
Please check the attached document in SAP Note 3452084 which guide you through the complete process.
The document describes two systems:
1) Source System: where SLD and NWDI server is configured.
2) Target System: where MII runs.
Once the configuration is completed, you should be able to enable the NWDI and use MII along with NWDI.