Merge pull request #2628 from segmentio/DOC-475-journeys-branch-merges

Journeys Connect to Existing Steps content [DOC-475]

Author: pwseg

src/personas/journeys/build-journey.md

@@ -54,6 +54,8 @@ Define the number of branches you want to create, then add a **Wait for conditio
 > info ""
 > Journeys doesn't enforce mutual exclusivity in branch conditions. For more information about ensuring branch exclusivity, see [Best Practices](#).
 
+**Connect to existing step** joins two separate branches. Use this step to target multiple groups with one step. 
+
 **Send to Destinations** delivers information about the Journey to the selected Destination. For more information, see [Send data to Destinations](/docs/personas/journeys/send-data)
 
 ## Cloning a Journey
@@ -130,6 +132,24 @@ Follow these steps to resume entry to a paused Journey:
 3. From the dropdown menu, select **Resume Entry**.
 4. A modal window appears. Select **Resume Entry** again to confirm.
 
+## Connecting to Existing Steps
+
+You can merge split Journey branches by using the **Connect to existing steps** option. Connecting to existing steps lets you apply a single step to more than one group. For example, you may want to target some Journey group members with email campaigns while targeting others with ad campaigns. Instead of duplicating steps, you can connect these steps to steps that already exist.
+
+Keep the following in mind when connecting to existing steps:
+
+- You can only connect the end of a branch to another branch.
+- You cannot link back or loop back to previous steps.
+- If you connect multiple non-exclusive branches, the user will only be sent to a Destination the first time they reach it.
+
+Follow the instructions below to connect branches to an existing step:
+
+1. Within an existing Journey, click the **Edit** button.
+2. Click the **+** icon below an existing step to add a new step.
+3. From the **Select a Step** window, select **Connect to existing step**.
+4. Choose the existing step you want to connect.
+5. Click **Save** to confirm.
+
 ### Drafting a Journey
 
 When you’ve finished creating your Journey, click **Save as Draft** in the bottom-right corner.