The ReRum system comes with a number of Nominal Codes already stored on it, and so it the majority of cases you will not have to add any, however, you will have to change the existing Code to match those used by your accounting software.
1 - Go to the Admin menu, hover over 'Finance', and select 'Nominal Codes'.
2 - Here you will be shown a list of all the Nominal Codes that have already been added to the system. Click 'Add Nominal Code'.
3 - Enter a Code and description by clicking in the relevant boxes and typing the desired text.
4 - Click the drop-down arrow in the 'Category' text box to select a category.
5 - Click 'Save Nominal code'.
6 - The Nominal Code you have just saved will now be added to the list that were already on the system.
7 - You are now able to map a Product directly to this newly created Nominal Code, during the process of adding a new Product (see here for details on this process).