Next you have to import your motion data capturing data. Click on **File -> Motion File Import**. Move to the location of the mocap data you want to use and double click on it. In the next window, choose the takes you want to import and then click the import button. Your mocap data will be imported into the scene. The markers' position will appear as small cubes on the scene.
Before starting the adjusting process you have to connect the optical data to your actor. For this, create a so-called _marker set_ and assign your mocap data points to the set. MotionBuilder will then use the markers assigned to the respective body part to calculate the animation. To create a marker set, first select your actor from the navigator window located at the bottom left. Next look on the right side for a button called **Marker set** and click on it. Choose **create** from the list that pops up.
