Hotkeys speed up the keystrokes a busy cashier hits dozens of times a day — keep your hands on the keyboard, finish a sale faster.
In the POS mode, hotkeys live mostly on the Transactions tab — the page where you build a sale. A few work elsewhere too. Press a key while focus is on the page background (not inside a text field); if your cursor is already in an input, the key just types.
Two keys jump your cursor straight into the search box you're about to use, with no mouse trip:
/ — focuses the product search at the top of the cart.C — focuses the customer search in the left panel (Search accounts).

These two shortcuts are the highest-value pair on the page — most of building a sale is "find a product, find a customer," and skipping the click between them adds up over a busy day.
/ and C also work on a couple of other pages where the same surfaces show up:
In the POS > Receivables > Payment tab, / focuses Search outstanding (the invoice search) and C focuses Search accounts (the customer picker).In the POS > Inbox tab, / focuses the inbox Search field.On other pages — the Customers, Products, and Vendors lists, Orders, Transfers — there's no / or C shortcut today; click into the page's search box.
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If your cursor is already inside a text field when you press / or C, Rundoo treats it as typing, not a shortcut — the slash or letter shows up in whatever field you were in. Click on the page background (or hit Esc) first, then press the key.
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In the action cluster at the bottom-right of the cart, three buttons set what kind of transaction you're committing — Quote, Will call, and Sale. Each has a one-key shortcut:
S — switches the cart to Sale (the default — what Complete sale will commit as a finished sale).Q — switches to Quote (the cart turns into a saved Quote when you commit; no money changes hands).W — switches to Will call (customer pays now, picks up later).