After Go> is clicked for Vegetation Layer (Select Layers screen), a dialog box (shown below) is displayed for entering 1) the name of the field that stores the vegetation types, and 2) the name of the field that stores the weed names in the Weed Layer.
After these field names are supplied, the Vegetation: Vegetation Susceptibility screen is displayed:
The purpose of this screen is to specify the level of susceptibility of each vegetation category to each type of weed. Selections are made on the left portion of the screen and the Add>> button appends those combinations to the table displayed on the right portion of the screen. This screen is completed when each combination of vegetation type and weed are displayed in the table.