Define back ground job for Maintenance Order Settlement through KO8G

Hi Experts,

I need to define back ground job for Maintenance Order Settlement through KO8G transaction code.

Here are the requirements

1. The job should run on weekly basis automatically.

2. The settlement period and posting period should be taken care by the job dynamically. i.e. if the job runs in July, the job should pick up Settlement period and posting period as 7 automatically.

Kindly let me know the steps to define the back ground job as per above requirement.

Sanjeev