On the main dashboard FarmLab screen, click on the '+ New Farm' button, which is located in the top left-hand area of the screen. 
This will open a 'New Farm' menu, where users can enter grower details. Please note the 'Billing Account' is separate to the growers details.
Once complete, select 'Continue', you have now created a new farm.
The farm will sit in the dashboard for you to search.