Okay so for each row you have to select a number

Symmetrical

0,2. Selected 0 1,2,3. Selected 3 0,2. Selected 2 0,1,2,3. Selected 0 0,2. Selected 0 0,1,2,3. Selected 3 0,2. Selected 0 0,1,2,3. Selected 1 0,1,2,3. Selected 1

The numbers selected have to add up to ten.

Then using the bottom table for symmetrical

0,2. (Rb/lb) selected 0 so no rb/ lb picked
1,2,3. (Cb). Selected 3 so 3 cbs added
0,2. (Rwb/Lwb) selected 2 so a rwb/lwb are added 0,1,2,3. (Cdm) selected 0 so no cdms are added 0,2. (Rm/lm). Selected 0 so no rm or Lm are added 0,1,2,3. (Cm). Selected 3 so 3 cms are added
0,2. (Rw/Lw) selected 0 so non are added
0,1,2,3. (Cam) selected 1 so a cam is added 0,1,2,3 (St) Selected 1 so a striker is added

Hope this helps. I would recommend using a random number generator or getting friends to pick numbers once you know how the system works so they randomise the formation for you