How to add something below tilemap in phaser?

[chaofawn]

Hi.

 

I'm new to phaser, and I'm working on a game where I need to add a dpad for mobile players. If I have a game size 600 x 800, how can I limit the drawing size of the tilemap to 600x600 so that I can use the other 600x200 to controls? 

 

Something like this: https://gyazo.com/8dc44f343c8d70370f66c0d2497d5fc0

 

Thanks!