Is it possible to set up specified schedule based on time conditions to increase and/or decrease Azure VMSS ignoring any other triggers? Is it possible to set it up via Runbook modules?
Schedule based autoscale for Azure VM scale sets is supported. See this article on advanced autoscale for more information: https://learn.microsoft.com/en-us/azure/monitoring-and-diagnostics/insights-advanced-autoscale-virtual-machine-scale-sets