To change the Disturbers select the noise profile in the GUI workspace and select edit from the Radio button.
The Noise Attribute Editing window will popup
Type the value in the Disturbers text box
If the box is grayed out you then need to use the following formula to calculate the level and Type the value into the level text box.
use this formula { new Disturber level in dBm = current level displayed in dBm +6 log(known number of disturbers / number of disturbers required) }
-43.924dBm= -50.4dBm+ 6 log(1/12)