The following window will pop up in your browser. You can select which data level you want to collect data on (plot, subplot, plant, etc...) in the dropdown next to "Data Level"
You can choose which columns to include in the field layout file by clicking either the [[-]] or [[+]] buttons next to the columns names.\
Click here.
In the bottom portion you can elect to include existing plot phenotypes, plot order, summaries of accession performance, and stats in the file. You can also choose to use trait synonyms instead of the full names.