A number of inventory items and asset groups are pre-entered for you.
To add more groups of inventory items or assets:
Go to Settings and select the blue "Manage Farm Details" button.
Select Inventory from the menu that appears
Click on the green "Add Group" button
Enter the name of the new group
Select group type
Select the application type
Tick the box to make sure the new group is available in Inventory before clicking "Save"
The group will now appear in your Inventory and items can now be added to this group.