Visit the project in which you want to edit levels and sectors and do the following:
Click on levels and sectors to the left in the project view
Click add level to add a new level
Click add sector to add new sector
What is levels and sectors?
You can divide larger projects into different levels and sectors. This helps the person that is reporting the deviations to show the person responsible to resolve the deviation where the deviation exists. Examples of levels are: plan X, floor X, etc and examples of sectors are: Area X, Staircase X, Zone X, etc.