Setup BitLocker with PowerShell
First, add a recovery key protector. The key will be printed to the console, make sure to record it.
Add-BitLockerKeyProtector -MountPoint "C:" -RecoveryPasswordProtector
Next, enable and set it to use the TPM
Enable-BitLocker -MountPoint "C:" -EncryptionMethod XtsAes256 -SkipHardwareTest -TpmProtector
Get the available key protectors (TPM, Recovery Password, etc)
(Get-BitLockerVolume -MountPoint C).KeyProtector
Remove a key protector
(Get-BitLockerVolume -MountPoint C).KeyProtector[0].KeyProtectorId | Remove-BitLockerKeyProtector -MountPoint C
Encrypt secondary drives
Enable-BitLocker -MountPoint D -EncryptionMethod XtsAes256 -RecoveryPasswordProtector
Enable-BitLockerAutoUnlock -MountPoint D
Documentation
Add-BitLockerKeyProtector
Enable-BitLocker
Get-BitLockerVolume
Remove-BitLockerKeyProtector