Their is a little compartment to the far left facing the dishwasher, that has a lid that can be completely closed, It has 2 compartments in this that allows for measuring out powder or you put the tablet in here.
In the middle of the door, their is a round plug that you rotate and pull out, here you put the Rinse aid, basically you fill it up till it fills the storage area below the plug area, (approximately 125mls fills it)
Grantlysme, August 2007