I believe this is the issue the previous member is having, and I am as well. QBO will only allow us to enter invoice information as a dollar amount or a percentage, then it calculates the quantity. Choosing the number format in the gear icon's settings only updates how the dollars show on an invoice. It does not help me format the quantity column to a specific format or number of decimals.

I would prefer to enter the quantity and have QBO calculate the dollar amount. I am including screen shots from our timekeeping system and from the invoice screen for your reference.