what manage-bde command to let encrypt windows drive whithout having TPM chip

i need a batch file to encrypt windows volume & i don't have TPM chip in my computer.

before running manage-bde -on c: ... command, i need a command so that Allow bitlocker encryption on drive C without having TPM chip.  (a command that acts lick group policy , computer config , administrative templates , windows components, bitlocker drive encryption, require Additional Authentication at start up , allow bitlocker without compatible TPM" 

what manage-bde command provide this for me ? 

thanks in advance