This dialogue is for blocking a levels of a factor out of the results of a Design of Experiment.
Warning
When blocking levels the change is very big that the test setup is not balanced after blocking when using a fractional design!
Use this option with care!
Balance indication in the factorial table is not showing the effect of a blocked level!
Example
In the "Block Level" dialogue from the factor Color the color Dark is blocked all the combination with Dark are filtered in the results.