T-code CJ88 role authorization using company code?

Hi expert!

who can tell me how to control CJ88 T-code using company code .

the business is below:

1, the user have 10 company code and only one control ares.

2, one employee cannot use CJ88 to settlement the project of the other company code.

can any one tell me how can i control

Please explain me all the steps to be required.

Thanks in advance!