Would love to play with this but I am unable to use in 2.3.2. I installed the board fine (got some other examples for BLE scanning and all works)... I installed the libraries : NimBLE 1.4.2 ...
The Arduino sketch will in essence do just one thing, set the name of the BLE shield. This name will be used for BLE advertisements. Note that you will have to load a sketch with a unique BLE name ...