Hi there, I just started with your product not too long ago, and maybe I am missing something very easy.
I am trying to use the substring function in FastDataMasker but it looks like I can only use on the selected column.
Here is my case:
first_name column, last_name column, username column
in the username column I want to have first initial from the masked value of first_name + last_name.
Any suggestions would be great.