Here is how to get up a deposit with Jobsheet & Xero.

1. Create a new invoice in Xero and make the reference (usually the job number)

 [job number]-1 or [job number]-dep

For example, this could look like: DEM3001-1

2. When they have paid, enter the payment into the Jobsheet job as a negative amount:

adhoc item: Deposit paid. Quantity 1 / Price -$1,00.00 (excluding GST if any)

3. When this job goes to Xero as an invoice it will total correctly on the remainder due.

When you go to search invoices in Xero you just type in the job number and both the deposit invoice (and any others) will also appear.

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NOTE: There is not way at this point to do part-payments in Jobsheet. It just records that an invoice is paid or not paid. 

If you are running Jobsheet without Xero, place a note on the job that a deposit has been paid so you know.