Rename "home" in main menu

Hello,

I would like to rename the default home button in my main menu. This is my first time using Boot Store and I cannot figure it out. I would like to keep all of the other presettings concerning the home page.
I am still working on the page but here is what it looks like to far. I want to rename “home” to “START”: http://www.bandixon.de

Thank you in advance for your help!

Greetings
Isabel