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Issue: If I understand your ask correctly, you are looking to know the impact if a one of the VM behind a Load Balancer is Stop/Start using a schedule.
Once a VM behind the Load Balancer is stopped, the Load balancer health probe to that node fails and the traffic from the LB will not be routed to the unhealthy node.
However, LB routes traffic to the healthy node and if the traffic is more the requests might get dropped.
Once the node is started and the LB health probe succeeds the traffic from LB will be routes to both the healthy nodes.
If you have any further questions on this, tag me in a comment.
Hope that helps.
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