The Constraints pane.
button on the Motive toolbar.
The Constraints pane.
button is active. Click the button to open the menu to select a different asset.
Selecting an Asset from the Constraints Pane.
Select columns to display.
icon in the *Type* column.
* **Calibration Marker:** Some biomechanical skeleton templates use calibration markers during asset creation that are subsequently removed prior to motion capture. In the 3D viewport, the constraints for these markers appear in red. Designated with the icon in the *Type* column.
* **6 DoF:** The constraint formed by a Rigid Body on a skeleton created using a Rigid Body Skeleton template. Designated with the 
icon in the *Type* column.
* **IMU:** The constraint associated with a [sensor-fused IMU](https://docs.optitrack.com/v3.1/motive/imu-sensor-fusion) in a rigid body. Designated with the 
icon in the *Type* column.
#### Color
The color column displays the color assigned to the constraint. The option with a 
rainbow effect links the constraint to the color defined by the asset.
#### ActiveID
The *ActiveID* column allows you to view and modify Active Marker ID values. Active ID values are automatically assigned during asset creation or when adding a marker, but this gives you a higher level of insight and control over the process.
#### Weight
Weight is the degree to which an individual constraint influences the 3D solve of an asset. Specifically, adjusting the weight tells the solver to prefer that marker when solving the asset data with less than an optimal amount of marker information. For example, the hands are weighted slightly higher for the baseline and core skeleton Marker Sets to preference the end effectors.
Editing this property is not typically recommended.
## Modify Constraints
{% hint style="info" %}
To see constraints as well as markers in the 3D Viewport, click the Visual Aids 
button and select *Marker Constraints* *-> Show All*.
{% endhint %}
### Add or Remove Constraints
Select the marker(s) to add to or remove from the asset definition in the 3D Viewport then click either the Add 
button or the Remove 
button at the bottom of the pane.
Click to Add selected markers.
button to deselect *Lock Selection to Asset*, and select the Markerset from the dropdown list.
3. Left click the Constraints Pane.
4. Use *Ctrl + V* to paste the label names to the pane.
Constraints Pane with new label names pasted in.
Mouse Control button in the 3D Viewport or use the *D hotkey* to open the [Quick Label](https://docs.optitrack.com/v3.1/motive/labeling#quick-label-mode) tool to quickly assign the copied labels to the correct markers.
Please see the [Labeling](https://docs.optitrack.com/v3.1/motive/labeling) page for more information on using the Quick Labels tool.
### Sort and Reorder Constraints
By default, the *Constraints* column sorts by the asset definition, or the order in which the markers were selected when the asset was created. Click the column header to sort the column alphabetically in ascending or descending order, then click again to return to the default.
Right-click Context menu.
color icon.
Rigid Body with custom colors assigned to four markers.
button to the right of the fields. Select *Set as default.* This will change the reset value from the Motive global default to the specific coordinates for the constraints.
{% endhint %}
Reset Position to Motive global default.
Reset Position after saving position coordinates.
context menu. There are options to export, import, and generate constraints.
Exporting constraints makes an XML file containing the names, colors, marker stick definitions, and weights for manual editing. Importing reads the (.xml) files made when exporting. Generating constraints resets the asset back to the default state, if applicable.
Please see the page [Constraints XML Files](https://docs.optitrack.com/v3.1/motive-ui-panes/constraints-pane/constraints-xml-files) for more information on working with these files.
