# Sample UI

The `coherence Sample UI` is a Prefab that you can add to your scene. It handles interaction with **coherence** services, is made up of a Unity UI Canvas and includes everything needed to handle connection to **coherence**.

The `UI` component on the root of the Prefab allows us to switch between using Rooms or Worlds. Each of these methods has a dedicated dialog for connection.

![](/files/MCthtKrTJ9fbddYJF74j)

The `Auto Simulator Connection` component is used by Simulator builds to connect to the relevant Replication Server.

{% hint style="info" %}
See chapter [Simulators](https://github.com/coherence/docs/blob/sdk-0.8/api-reference/network-sdk/broken-reference/README.md) to learn more about them.
{% endhint %}

The *Rooms Connect Dialog* has a few components that facilitate the usage of Rooms.

At the top of the dialog we have an input field for the player's name.

Next is a dropdown for region selection. This dropdown is populated when regions are fetched. The default selection is the first available region.

{% hint style="info" %}
Due to current limitations the local Server is fetched only if it's started before you enter Play Mode. The *Local Development Mode* checkbox must also be checked in the project settings (*coherence > Settings*).

This affects the local region for Rooms and the local worlds for Worlds.
{% endhint %}

Beneath these elements is a Rooms list of available Rooms in the selected region.

![](/files/nymDLnuVUiKrWZG1CfKg)

After selecting a Room from the list the *Join* button can be used to join that Room.

The *New Room* tab will take us to the Room creation screen.

![](/files/DLjYUjDtOKiIKkRFSH5D)

This screen contains controls for setting a Room's name and maximum player capacity. Pressing the *Create* button will create a Room with the specified parameters and immediately add it to the *Room List* in the previous tab. *Create and Join* will create the room, and join immediately

The *Worlds Connect Dialog* is much simpler. It simply holds a dropdown for region selection, an input field for the players name, and a *Connect* button.

![](/files/sSEazGEF1ilS88hrDLcf)

{% hint style="info" %}
You can also build your own interface to connect players to the Server using the`PlayResolver`API. To learn more about the API, see either [PlayResolver](/0.9/api-reference/network-sdk/playresolver.md), [Rooms](/0.9/api-reference/network-sdk/rooms.md) or [Worlds](/0.9/api-reference/network-sdk/worlds.md) according to what your project needs.
{% endhint %}


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