How to notify an employee if Admin has send any document/ task through journeys

Summary:

How to notify an employee if Admin has send any document/ task through journeys

Content (required):

We have a requirement If Admin sends any document/ task the notification should be triggered to employee.

Ex: While onboarding stage, employee and admin will receive checklist notifications. But Admin has to send some documents to the employee. Admin can able to send but employee is not receiving any notification

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):