Howto set the batch job for a sap standard program? my requirement is

Hi Experts,

How to set the batch job for sap standard program? my requirement is 1." every sunday night

all the items should be processed to tables.

2. On 3rd business day after period end where the closed period must me processed again..

Could you please tell me what are the steps involved while creating the background job scheduling for this requirement...

Thanks in advance.

rewards for helpful points.

Regards,

DR.