Last year's LG V20 came with a tiny secondary display right above the main screen, where you could access useful shortcuts. That secondary screen is gone on the V30, but you have a new Floating Bar feature from where you can access your contacts and shortcuts to apps and neat actions.
It should be enabled by default, but you will want to customize it or even disable it if it gets in your way. If you feel the similar problem, let us ensure that you don't face any problems from now as we now have some tricks, so here is how to do so:
Go to Settings
Select the Floating Bar in the General Tab
You can customize which apps and contacts should appear as shortcuts
You can also add some new shortcuts using Floating Bar
There is also a toggle for ON/OFF to turn Floating Bar On or Off