# Adding Groups
Reality Hub allows you to group your Hosts to control various features, such as **launching all Engines simultaneously** or [assigning channels](https://zerodensitydocumentation.gitbook.io/docs/reality-5.4/reality-5.4/configurations/configuring-reality-hub/engine-module-configuration/channel-assignments) to a group of Engines.
It is an essential feature for **multiple engine configurations**.
Engine Grouping
When you choose the Groups for the first time, it looks like the image above.
To add a Group:
* Go to **Main Menu** and select the **Configuration.**
* Select the **Groups** under the **Engines.**
* Click on the **+ (Plus)** button to **Add New Host Group**.
* Define a **New Group Name** in the pop-up menu and click **OK**.
To Assign an Engine(s) to the Group you defined:
* Select the **Group** you defined earlier.
* Go to the **Assigned Engine** section.
* Click on **+ (Plus)** button inside the **Assign Engines to the Group.**
* In the pop-up menu, click on the **Engine** name, then click **Select**
{% hint style="info" %}
You can select multiple engines individually by pressing the **CTRL** button. For a **bulk selection**, press the **SHIFT** button on your keyboard.
{% endhint %}
