Hey @Michel Friedman , great question. To do this:
1. First, set up a parent task to hold the multiple sub-tasks
2. Create the first subtask (e.g. Send an Email)
3. Create the second subtask and add a due date (e.g. 5 days after) and set to Automate = true

This will have the second email fire automatically 5 days after the first email is sent, regardless of when they were added to the stage.