Hi Kristof,
Can you expand on your question a bit please.
Are you wanting to remove the whole column, or just some cells inside the column?
For example, in some situations it's good to remove a whole column, say the employee's "salary" column because the user doesn't have rights to it.
In other cases, some rows might display the contents of a cell or not. For example, temporary employees have a blank salary cell, but permanent employees have their salary on the row.
Which one are you trying to do?
cheers
Bruce