Budget on Numbers

Hi I am in the process of creating a simple spreadsheet for my family's finances on Numbers. I am trying to keep it as basic as possible. In the first column, I have the location of where the money was spent. In the second column, I have if the money is being deposited and I put this in green. In the next column, I have if the money is being withdrawn and that is red. The final column is the total amount in the bank account. I would like to make it so the final column adjusts itself each time I put either a deposit or withdraw in the previous two columns, that way I don't have to consistently recalculate. Is this possible?

Thank you!