How to create Google OAuth Credentials Client ID and Secret

OAuth client ID credentials
In the Google Cloud console, go to Menu menu APIs & Services Credentials.
Click Create Credentials OAuth client ID.
Click Application type Web application.
In the Name field, type a name for the credential.
Add authorized URIs related to your app:
Click Create.
Click OK.
How do I create a client ID and client secret in Google?

Go to the Google Cloud Platform Console Credentials page. If it's not already selected, select the project that you want to update. From the list of OAuth 2.0 Client IDs, click the client you want to generate a new client secret for. On the client details page, click Add Secret on the right side to add a new secret.

How do I set client ID and client secret?

To add a client ID
Sign in to Partner Center with your developer account and go to the Product overview page for your add-in.
On the Client IDs tab, select Add new client ID.
Select Create secret now.
Choose how long your client secret will be valid for.
Select the availability of the client secret.

How do I pass a client ID and secret in REST API?
You now have a client ID, a secret, a username and a password. The last information needed to use the REST API is the token. First, you will have to encode the client ID and the secret, in base64, with a : in between. The content type application/x-www-form-urlencoded is also supported.

How do I create a Google credential?
In the Google Cloud console, go to Menu menu APIs & Services Credentials. Go to Credentials.
Click Create Credentials OAuth client ID.
Click Application type Desktop app.
In the Name field, type a name for the credential. This name is only shown in the Google Cloud console.
Click Create.
Click OK.