When you provide extra ad hoc care to a participant during the week, you are likely to decide to charge for these items.
However, the Roster of Care module only generates the regular supports.
Add the ad hoc supports in via the Service Delivery module.
Click on the "ADD" button.
This will open a "Add a Service Delivery" module. 
Fill in the participant details, product, units , rate, dates, category x, y, registration, invoice recipient and how the claiming or invoicing is being managed. You can also add your preferred user field which is user defined. After filling in all the mandatory fields, click on "Add Service" buttonm to add the service delivery item.