They are perfect consonances, yes, in sequence. But if you stack them on top of each other (C on C), (G on C), (C on C), they form perfect consonant intervals simultaneously.
In Properties -> General, you have your Show settings with X/Y values to move each note,
but yes, individual beams means individual voices in not only a matter of visual aspect, your example image is not a correct notation.
yes, you have 4 voices, Blue (1), Green (2), Orange (3), Purple (4)
write one voice, then click 2 on keypad and write 2nd voice, click 3 and write 3rd voice etc.
it should look like this:
To change beam up or down, select note and click X