The guide walks you through how you manage the chemical inventory & use volumes in the chemical register
(Clicking the image opens a larger image)
By opening the chemical, it is possible to add / remove at which destination the chemical is used. The addition is made by selecting the level to be added from the level menu on the left. Deletion is done on the right side under the "save" button level by level.
You can add a description, stock quantity and annual application rate for a chemical on a level-by-level basis. The changes are saved by pressing the "save" button next to the filled line.