How to Configure LVM for the External HDD While Deploying the machines

Hi Everyone!!!

Im very new to this service, I have a doubt requesting to help me…
Currently i have installed the maas from the ppa stable in my local oracle virtual box and have created a machine with 3 HDD like this sizes
Selection_066

Here No 1 is my root volume ,2 and 3 is addition HDD
and have set the storage as LVM

Selection_067

when deploying the machines via maas console am getting pass status in commissioning and it detects the HDD correctly

screencapture-192-168-2-130-5240-MAAS-2019-08-03-17_33_38

screencapture-192-168-2-130-5240-MAAS-2019-08-03-17_33_57

After that i have deployed the centos7

screencapture-192-168-2-130-5240-MAAS-2019-08-03-17_43_59 on this machine Once i logged into that new machine the root volume has been changed LVM other additional drives are not like root
Selection_068!

Selection_071!

Selection_070!

Selection_069!

My Goal is if am Selecting the storage layout as LVM it will apply the changes for all other HDD too
How to do that?

Looking for your response…
Thanks,
John