GameGlass Premium Shards use Star Citizen default keybinds when possible, however a number of controls are unbound in the game by default so you will want to enable our keyboard profile from the in-game menu to make sure every button will function as intended.
To change the keybind profile first go to options from the main menu:
Next you will need to select the "keybindings" tab and then "advanced controls customization":
From here you will see "control profiles" and there can select the preconfigured "GameGlass Keyboard" profile and you're all set!