While in the quest, hit the escape key to open up the pause menu. You will see three or four pull-downs, the furthest left will be 'File' and--if cheats are enabled--the furthest right will be 'Cheats'.

Select this pull-down and choose 'Enter Code'. The code is set by the quest creator and you will need to contact that quest creator privately for it. It is possible that they only allowed cheats for debugging purposes and they may not share with you because of the potential for the cheats to break your save file. It is also possible that, based on the age of the quest, the creator will no longer be available to answer your request.


If the 'Cheats' pull-down is not there when you press escape, the quest creator has disabled cheats and there is nothing you can do to change that.