# Vertex Groups, Hierarchy, and Armature ### Create and assign Vertex Groups To create a new vertex group, go to **Data** tab, click `+` in **Vertex Groups**, double click on the Group name and rename it to **bonnet**.

1. Change **Object Mode** to **Edit Mode.** 2. Switch to **Face Select.** 3. Select all faces by pressing `A` or using the `CTRL+A` shortcut. 4. Go to **Vertex Groups**, click Assign button and exit **Edit Mode**. Now all of the selected faces are properly set to the **bonnet** vertex group**.**

### Hierarchy Our new custom bonnet model has to be considered by Sollumz as a valid part, so we have to move the mesh by expanding Adder's armature then drag and drop bonnet's Drawable Model inside `adder.mesh`

{% hint style="info" %} You can delete the original bonnet, since is not needed anymore. {% endhint %}

Removal of vanilla bonnet part of adder.

### Armature A replacement custom part has also to be linked to the armature, you can do this via **Armature** modifier. 1. Go to **Modifiers** tab. 2. Add an **Armature** modifier. 3. Select your vehicle's armature.

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