Pick Release on Specific days

Hi All,

I have the following requirement

Order is booked on a daily basis in the system. But for a particular customer A, all the orders needs to be picked only once a week say on Thursday each week. For Customer B the orders need to be picked on Fridays only.

In the current set-up we are using pick release rules grouped by shipment priority. I do not want to define a pick release rule for each customer and this is my last resort.

Is there any way to get this done in the system? If anybody is using this currently please let me know.