> For the complete documentation index, see [llms.txt](https://docs.coherence.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.coherence.io/0.9/developer-portal/configure-rooms.md).

# Configure Rooms

![Configuring rooms in the Developer Portal](/files/yhmOEl9lmS4ina9fDOIY)

From the left sidebar, select *Rooms*. On this page you can:

* choose the regions you want to allow your rooms to be created in
* enable Simulators for your Rooms
* view a list of recently created Rooms

### Simulators

From the Developer Portal, you can configure what size you want your Simulator instances to be. To attach a Simulator to a Room, send the "Simulator slug" uploaded through the SDK with the Rooms creation request. When using the [PlayResolver](/0.9/api-reference/network-sdk/rooms.md#rooms-api) to create Rooms, the Simulator uploaded through the SDK is automatically assigned in the creation request.