Frequency of Shipments - Where Is Best to Store

Asking for a best practice from users, we'd like to keep the frequency of shipments from branch to branch in JDE in a specific location. For instance, if we ship to Store A every week and Store B every other week and a DC once a month, we'd like to store 7, 14, and 28 in the respective locations so we can utilize the information in creating Order Policy Code standards, etc. I was thinking Branch Plant Relationships, but I'm not sure there is a field we can/should repurpose or if there is another standard place someone is using for this data.