Stackably runs many locations on one account, and products, memberships and settings can be shared across them. Stock and POS reports are the exception: each location keeps its own inventory counts and its own reports.
Stock
There is no transfer action between locations.
To move stock, deduct it from the sending location in its Inventory Hub (Adjust Stock › Remove / Deduct with a reason) and receive it at the destination location (Adjust Stock › Add, with cost, lot and expiry if you track them).
Reports
POS reports (Day So Far, Sales Summary, Product Mix, Discounts) are per location.
There is no consolidated all-locations report. To compare locations, export each location's report to CSV and combine them, or use the Finance tab's income view per location.
See Does Stackably support multiple locations? for what is shared across locations.