order is given by the X and Y properties.
if you have 2 cards (A and B) having 1/2 of the parent width then to have them ordered A & B on the same line then:
for A: x=0, y=0
for B: x=1, y=0
Now if you have C with width equal to parent width and you want C on the second line than:
C: x=0, y=1
To place D on the same line with C, be sure the sum of their width < parent width and
😧 X=1, y=1
You can change the order of C and D by switching the X property in between C and D, leave the same Y
If C.witdh+D.width > parent.Width than D will be placed on the next line.
Hope it helps.