not saving configuration to 2 monitors

[ferra]

I have 2 monitors in my desktop. One connected to HDMI and the second to VGA. I have installed a Nvidia GeForce GT 730
First I only can see one monitor in the configuration, despiste I can choose the monitor from device option. I can only see the monitor conmected to HDMI, when I choose the device on The VGA keep seeing the HDMI monitor.
I can have the 2 monitors working, but if I reboot it changes the configuration to mirror the monitors, what I don't want.
Any idea?
Thanks

[ferra]

Removing kscreen solve the issue. But now how can I configure the monitors if needed?