To link workflows, you can use Reusable Workflows.

They have a video on YouTube explaining this in more detail 

To effectively manage and link multiple workflows in Intercom, follow these best practices:

Map Your Workflow Structure: Outline the workflows on paper or a tool to visualize how they connect, ensuring clear triggers and outcomes for each.

Use Custom Data Attributes: Leverage custom attributes to pass information between workflows, enabling seamless transitions and avoiding duplicate triggers.

Set Clear Triggers and Actions: Use distinct conditions to trigger workflows, such as specific user events, tags, or attributes. Avoid overlapping triggers to reduce errors.

Test Incrementally: Test workflows in small sections before linking them to ensure they function correctly. Use Intercom’s "Preview" or test mode for validation.

Document Your Workflows: Maintain a log of linked workflows, including their purpose and triggers, for easy troubleshooting and updates.

Monitor Performance: Use Intercom’s analytics to track workflow effectiveness and identify bottlenecks or errors.

also you can check this article  and the above video for help.

By carefully organizing and testing your workflows, you can create a seamless automation system that improves user experience and operational efficiency.