To create a new project, log into Google Cloud with your administrator account details and select 'Select a project' then 'New project'.
Give your Project a name such as "Reading Cloud" and link it to your organisation then click 'CREATE'.
Next, search for 'apis and services' at the top of the page then select 'APIs and services' from the list.
Click 'OAuth Consent Screen' and select 'Internal'
Give your App a name such as "Reading Cloud" and enter a support email for your establishment.
Enter an email which Google will use to contact you, then click 'SAVE AND CONTINUE'
On 'Scope', click 'SAVE AND CONTINUE' and the Summary screen will then be displayed.
From the menu on the left-hand side, select 'Credentials', then at the top of the page select 'CREATE CREDENTIALS' then 'OAuth Client ID'.
In the 'Application type' box, select 'Web application' then enter a name such as "Reading Cloud SSO" and click 'CREATE'
Click the copy button next to 'Client ID' then in a different window, ensure you have selected your identity provider and paste the Client ID into the relevant box.
Now repeat this process for the 'Client Secret'.
Now click the copy button next to 'Redirect URI' in the library system and return to the Google page.
Click 'OK' on the 'OAuth client create' window and then select the OAuth 2.0 Client IDs name that you have just created (Reading Cloud SSO).
Under 'Authorized redirect URIs' click '+ADD URI' then paste the copied URI into this box and click 'SAVE'