A few minutes ago, you have defined a German grammar. This article explains what is to do next.
1. Press the Commands button.
2. After you have clicked the Commands button, the Commands tab opens. Press the Manage plug-ins button.
3. Press the Add button.
4. Select Dictation. Press the OK button.
5. You have selected the Dictation plug-in. Press the OK button.
Conclusion: Now you know how to add the Dictation plug-in.