You can apply custom parameters while creating a screener or editing it. These parameters can be accessed in the 'View All Parameters' section at the top right corner or in the ‘Suggestions’ pop-up box for quick selection, making your screening process more efficient.

For more information on creating screeners, you can visit the detailed FAQ on screener.

You can also use custom parameters in the ‘My Metrics’ section.

Select ‘Add New Metrics’ to create a new metric using custom parameters.

From the list, you can find your custom parameters, choose an available metric and then select ‘Done’. The new metric will be added, as shown below.