In our sharepoint list, we have a column called "Internal Notes", this column should only be available by IT Management. Is it possible to set up the permission only for the column "Internal Notes". I noticed that it's possible to hide columns by using rules (but no validation function available for checking if the current user is in a member of "IT Management"). For the Control setting (of the input field), there's a Appearance section where I can set up the visible condition to "expression", here checking if current user is a member of specific group is available.
What I would like to have is
In new mode: Internal Notes is available
In Edit or Display mode: only available for the CreateBy and "IT Management" group.
Could you please suggest how to define the "Expression" condition? Your help would be highly appreciated.