the ir aim is for when u have the cam on out in the woods the aim switch is for when u set the cam up u turn it on aim and step back so u can see the laser where the sensor is u want it at like waist height so the deer can set off the sensor when they walk thru but leave the ir aim off in the settings i dont think its important then once ur cam is set up and u used the aim switch and got it where u want it just turn it on and then turn it to auto then u should be good to go