A transfer moves stock from one of your locations to another — one store sends, another receives. Even if you run a single location today, transfers are how you'll move inventory once you open a second.
In the POS mode, open the Transfers left tab — that's where every transfer lives.
The top-tab strip on Transfers is the lifecycle of a transfer, left to right. Each tab shows a live count of transfers in that state.

New — the empty builder; start a fresh transfer here.Drafts — in-progress transfers saved but not yet submitted.Requested — transfers waiting on approval or fulfillment at the source location.Sent — stock has left the source, in transit to the destination.Received — stock has landed at the destination; counts have been updated on both sides.Voided — canceled before completion.A transfer moves through New → Drafts → Requested → Sent → Received, with Voided as the off-ramp if it gets canceled.
Open the New top tab (or click Transfers in the left sidebar — it lands you here by default). You'll see the transfer transaction-builder: Transfer from and Ship to on the left, product search in the middle, totals on the right, and the action cluster at the bottom.

Transfer from and Ship to are both required before the builder will let you submit. Until both are set, the product line-item table is empty and the Submit button is disabled.
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Rundoo doesn't flag missing fields when you click Submit or Save draft on a half-filled transfer — the button just does nothing. If nothing happens, double-check you've picked both a source and a destination and added at least one product.
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Click Select location under Transfer from and pick the store that's sending the stock. Then click Select location under Ship to and pick the destination.