[TheLex]

Here's a guide on how to do it.

http://a230.g.akamai.net/7/230/2320/v001/toyota.download.akamai.com/2320/lexus/media/lexusdrivers/acs/howto/NX/2015_NX_Customize_Startup_High.mp4

It's not a YouTube video so I can't embed it. Post a picture here of your customized screen.