In the first step you have to create a new template by clicking on the button "Create template". Here you cannot yet store a requirement-exercise-matrix or target profiles. As soon as you have saved and created the template, the new page "Edit template" appears.
Here you can make your desired settings for the requirement- exercise-matrix and the target profiles. To do this, the target profiles must first be activated using the slider under "Use Target Profiles".
More information about editing the templates can be found here.