What does the Customizers button do

Forms SharePoint Online
1

I can't seem to find anything that explains what the Customizers button do?

2

Hello @smithme,

The 'Customizers' will display all fields that hold data for Ink Sketch, DataTable or Likert Scale.

Please see 'Save Ink Sketch, DataTable, and Likert scale controls to SharePoint fields + List View Rendering' article for more information.