In the tests folder, create another folder called data (if this doesn't already exist).
In the data folder, create a file called screenshots.xlsx or contact us to send you a skeleton to place here.
To execute tests on data in screenshots.xlsx, create a test case in one of your test files.
Keyword/Action = capture screenshots or test screenshots
Expected Value = name of the excel sheet in screenshots.xlsx that you want to test
Format: (minX, minY, maxX, maxY) & (minX, minY, maxX, maxY) & (minX, minY, maxX, maxY)
Format: (x, y)