"Profile (Roles)" is used to customize the page / table columns or interface, like "Personalize".
However, it is according to role. Users who are using that role will have the changes made, but not only per user.
Follow below steps to use the function:
1, Search "Profiles (Roles)"
2, Select the role you would like to edit. Click "Customize pages"
3, The editing process is same as "Personalize".
E.g. Edit the column of Purchase Order
Choose to "Move" / "Hide" the column or set Freeze Pane.
4, After finishing the process, click "Done"
Will have below message for successfully edited.
