"If there are no spreadsheets or existing tables to use for your application, you can create and customize a new table." see this quote in link below:
https://docs.servicenow.com/bundle/tokyo-application-development/page/build/app-engine-studio/task/create-table.html Also see:
https://docs.servicenow.com/bundle/tokyo-application-development/page/build/guided-app-creator/task/gac-create-table-from-scratch.html Also, no search results if search on "Now Experience Table Creator".

Creating applications in ServiceNow can help businesses replace outdated, inadequate, custom business applications and processes, extend service delivery and management to all enterprise departments, and extend the value of ServiceNow by leveraging its platform capabilities and integrations1234.
References = 1: What are Application Services? - ServiceNow 2: What is Application Development? - ServiceNow 3: Custom Applications in ServiceNow - The Cloud People 4: Build Custom Apps in ServiceNow
- eBook - ServiceNow

https://docs.servicenow.com/bundle/tokyo-servicenow-platform/page/administer/notification/task/t_CreateANotification.html Reference:
An Email Notification is a record that defines the content and conditions for sending an email message from the ServiceNow platform. The following are configured in an Email Notification:
Who will receive the notification. This is specified by the Recipients related list, which can include users, groups, email addresses, or scripts that return email addresses.
What content will be in the notification. This is specified by the Subject and Message HTML fields, which can include variables, scripts, or templates to dynamically generate the email content.
When to send the notification. This is specified by the When to send tab, which defines the conditions and events that trigger the email notification.
The following is not configured in an Email Notification:
How to send the notification. This is not a configuration option for an Email Notification. The platform uses the SMTP protocol to send email messages, and the email properties control the email server settings and behavior. Reference: Email Notifications, Get Started with Notifications

The purpose of application scoping is NOT to provide a way of tracking the user who developed an application. Application scoping does not store or display information about the user who created or modified an application or its artifacts. The purpose of application scoping is to provide a relationship between application artifacts, provide a namespace to prevent cross-application name collisions, and provide controls for how scripts from another scope can alter tables in a scoped application. Reference: [Product Documentation | ServiceNow], [Advantages of Scoped Applications in ServiceNow]