How do I indicate that a column in a data table has been added or changed?

  1. I have a data table where I let people toggle columns (Show/Hide)
  2. A few columns also change based on the value of a dropdown the users select inside a modal that controls table settings
  3. How do I indicate to the user on screen that the column they just added appeared at position 20 or the column they modified is right there look Any suggestions are appreciated