SNP Heuristics generates purchase requisition

Hi Experts,

I have a requriement to generates purchase requisitions start date at Monday; Im trying to use period factor but still I gets the reqs still falls in different days and also the planning calendar under the lot-size. Is there any other ways that I can apply this requirement?

My lot-size is weekly bucket and 1 day transportation duration and 1 day GR.

Thanks

Regards,

Lhon