You need to determine your preferred style... Turn it on and leave it on, or momentary on while searching.
It also plays into your intruder strategy... Bunker down in a defensive position, call the police and wait... Or go investigate/confront.
The sit and defend method is recommended for most people... As it is safest a day does not require the skill/training of searching/investigating.
The only time moving through the home is recommended is when there are other people in the home under your protection. And even then, it is only recommend that you move to their location and bunker down.
When moving momentary using the light is the recommended method.
Either way... I find simple on/off tail cap switch or default max bright best. Multiple light modes are good for utility lights, not a weapon light.
I use a streamlight polytac, simple on/off tail cap switch, 150 lumens.
Some streamlight models have modes, but it always defaults to max when turned on.
I have a cheap light for around the house that cycles modes when you turn it off and on... Not something I would use as a weapon light.
This was typed quickly on my phone, so it is not comprehensive and may have typos.