To create an instance template through the Google Cloud Platform Console, follow these steps:
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In the GCP Console, go to the Instance Templates page.
 
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Click Create instance template.
 
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Fill in the fields you want for your instance template, or accept the default values. The following values are provided by default:
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Machine type: n1-standard-1
 
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Image: The latest Debian image
 
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Boot disk: A new standard boot disk named after the instance
 
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VPC network: The default VPC network
 
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IP address: An ephemeral external IP address
 
 
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Optionally, change the instance's Shielded VM settings, if you chose an image that supports Shielded VM.
 
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Optionally, click on the tabs in the Management, Security, Disks, Networking, Sole Tenancy section to further customize your template. For example, you can add up to 15 secondary non-boot disks.
 
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Optionally, click Equivalent REST at the bottom of the page to view the REST request body, which includes the JSON representation of your instance template.
 
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Click Create to create the template.
 
Hope it helps!!
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