Changing the resolution on Faytech monitor

[ivan.chonin@axbul.bg]

Hello,
Out configuration is RevPi 3 conncted with HDMI to Faytech monitor FT133TMBCAPOB-V2.
I am trying to change the resolution on PI - "sudo raspi-config" but it seems impossible - the menu for the resolution doesnt open.

Is there any other way to lower the resoluiton ?

[ivan.chonin@axbul.bg]

Hello,
We found a way how to do it - it was from the Pi configuration we had to install - "arandr" and now we are able to see a different resolutions under the "raspberry pi configuration" start up menu