Click "Details" next to the task where the dependency is being created.

Select the task that Task 2 will be blocked by. This means Task 2 will not be assigned until Task 1 is marked complete.

Add an assignee to each task. When Task 1 is marked as complete, the assignee for Task 2 will receive a notification that they can now begin on Task 2.

Before Task 1 has been marked complete, the icons next to Task 1 and Task 2 will look like this. 

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This guide provides step-by-step instructions on how to use dependencies in Asana to manage tasks. It explains how to create dependencies, assign tasks, and receive notifications when dependent tasks are ready to be completed. Viewing this guide will help users effectively utilize Asana's dependency feature to streamline their project management workflow.