Hello Ibrahim Shaikh
Welcome to Microsoft Q&A Platform, thanks for posting your query here.
Enabling the auto start and shutdown feature in your VMs will not incur any additional cost. This feature is available free of charge and can help you save costs by proactively preventing additional costs when the virtual machines are not being actively used.
Below document provides a step-by-step guide on how to configure the auto start and shutdown feature for your VMs.
Ref:https://learn.microsoft.com/en-us/azure/azure-functions/start-stop-vms/overview
Hope this helps.
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