An Assay is the definition of a Test. What an assay says is what a test does. In order to start working in your lab, you must create an Assay. To do this, click on Configuration, then Lab, then Assays and finally +New Assay.
A new page will open. Enter a name under Title and click Save at the bottom of the page. This will save a new Assay. You can enter more information if you choose to, but it is not required to create an assay.
The page will reload with new tabs. You can customize these further, but it is not necessary.