In this case we will be using a BRD4186C
radio board
On the subsequent screen select Bootloader - NCP UART XMODEM
This will create a Geckpo Bootloader project with upgrade over UART support
It will bring in the minimum required to get started with a radio board
Click Next
Rename your project as you whish
If you wish to, you can also set your project to copy all sources from the Gecko SDK locally upon configuration
This allows for easier versioning but complexifies import/export