1. put a tile drone in the place you want them to start.
2. where it is 6,x,y,this, change that to 6. don't press L yet
3. at the end of the code put ^ then the speed you want.
4. then after ^(speed) do two commas (,,).
5. Say you wanted to do a 2 by 2 square starting at the top-left, after the two commas, put R (right) D (down) L (left) then U (up). So on mine I did like heaps of UUDDDDDUDUD,etc.
6. Next is the most hardest thing. put ^^ after your custom path. Like on the square, it has E tiles. So you do ^^1111 which is 4 E tiles. I did the number 1 because if you lay an E tile on a blank map then go to the data, you will see a 1 not a 0. Do this with 1 tiles, 2 tiles 3 tiles, etc.
Instead of that,
1 tiles

3 = Q
2 = W
5 = S
4 = A

2 tiles

G = Q
F = W
I = S
H = A

3 tiles

? = Q
> = W
A = S
@ = A

4 tiles

7 = Q
6 = W
9 = S
8 = A

5 tiles

Q = Q
P = W
O = S
N = A

6 tiles

K = Q
J = W
M = S
L = A

7 tiles

C = Q
B = W
E = S
D = A

8 tiles

; = Q
: = W
= = S
< = A

Full tile = 1
Empty tile = 0

7. set alpha to 0 (tell me if you don't know how to do that)

map is shaped like Africa.