How to set up different settings for one field on the add/edit pages

1. create alias for this field on the Edit SQL query tab
   

   select field1,
   

   
   field1 as field1_readonly,
   
   ...
   
   from TableName

2. check off field1 on the add page and field1_readonly on the edit page on the Choose fields tab

3. and set up different settings for these fields on the "Edit as" settings dialog on the Visual Editor tab.