Hello @NGaur-3476
Within the Runbook editor, you can simply select the runbook and add it to the canvas to it runs as an inline script. (Note: this method isn't supported in PowerShell 7.1)
Alternatively, you can use the cmdlet Start-AzAutomationRunbook to run your runbooks from the same or different automation accounts.
Which ever method works for you, make sure you check out the examples and full details here. https://learn.microsoft.com/en-us/azure/automation/automation-child-runbooks
I hope this helps provide you with the information you need. If it does, please make sure to mark the question as answered so it helps other people in future.
Kind Regards
Alistair