What is the purpose of changing these setting? How does each new settin change how the tool will work?

 task
Insert multiple edges for the diagonal grill vent.
Tool
Insert edge loop tool
Settings
multiple edge loop: on
number edges loop: 4
Auto complet: off
what is the purpose of changing these settings?
How does each new settings change how the tool will work?
Multiple edge loops
number of edges loop.
auto complet


The purpose of changing these setting is so that we can customize the object like we want it. We want to have 4 edge loops.  You also do not want Maya to automacally finish your object.