Hatch - boundary settings

Hello. I am trying to use the Hatch function. I am fairly novice at draftsight. I draw a rectangle, select hatch and the hatch settings box pops up as expected. I can select the type of hatch/fill but it will not allow me to specify entities or specify points. When I click these options it does nothing. Eventually I have to click cancel as it is the only way I can get out of the menu. Could anyone offer me any advice? it would be most appreciated.