You can find the Hire Stocktake screen under Setup > Item Related > Hire Stocktake
Hire items are functionally very different from sales, you may not be able to have all items available to do your stocktake, so HirePOS will calculate how many you have (Qty For Hire), and work out the variance based on the "Qty Expected" (Qty for Hire, minus the Qty Currently on Hire).
To generate a new stocktake, you simply need to click the "New Stocktake" button, and input the counted values into the "Stocktake Qty" column.
As stated above, the variance is calculated based on the "Qty expected" column.
You can also do the stocktake via Scanning barcodes, using the "Scan barcodes" button at the top of the screen.
Unlike the Sales Stocktake, Hire Items will not have their Qty be automatically adjusted, due to the potential complexity with Availability.
So, we recommend clicking the "Preview Hire Stocktake" button and printing it out as a reference, then using the "Stock Adjustments" function (Which can be found at the top of the Setup > Items screen) to add/remove stock as required.
Using the Stock Adjustments tool will give you an audit trail, as opposed to simply editing the Qty for hire in the item details, which will not.