Raspberry Pi Set custom display resolution

Task: Set custom screen size and use it on small monitor

Solution:

Use next commands:

Get current display name and resolution:
$xrandr -q

Set custom screen size:
$xrandr --output HDMI-1 --mode 1360x768 --panning 4096x2048

Restore default screen size (to 1360x768 which is my default size):
$xrandr -s 1360x768

Done.