hey @mathurin1 you can also use aCLI command line tool to achieve the same. You will need to run the aCLI commands to power on specific VMs from the CVM on the cluster.
You can have a look at this post : https://next.nutanix.com/how-it-works-22/manage-multiple-uvms-at-once-using-custom-acli-scripts-on-a-nutanix-cluster-37896 which mentions similar scenarios to power-on/ power-off specific VMs using aCLI.
I hope this helps. 
Hey @AnishWalia20, yeah this will work. Thanks!
Glad you found it useful @mathurin1 . Let me know if you need anything else on this.
Wish you a very happy new year 2021 in advance.