diff --git a/README.md b/README.md
index e30d041..320c1b4 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,14 @@ The Open/Save dialog should now have switched to the selected folder or file pat
 
 [Alfred forum thread](https://www.alfredforum.com/topic/6013-go-to-here)
 
+### Call workflow from another workflow
+
+Optionally use the external trigger to call this workflow from another one. For example:
+
+1. In a separate workflow, add a List Filter, File Filter, or Script Filter. The workflow needs to output a file or folder path.
+2. Add a [Call External Trigger Output](https://www.alfredapp.com/help/workflows/outputs/call-external-trigger/) for outputting the path.
+3. In the settings for that output, click "Workflow Triggers..." and choose the trigger for this workflow.
+
 ## Credits
 
 [ahmadt](https://www.alfredforum.com/profile/9334-ahmadt/), [sepulchra](https://www.alfredforum.com/profile/717-sepulchra/), [vitor](https://www.alfredforum.com/profile/1891-vitor/), [jwrc](https://www.alfredforum.com/profile/55950-jwrc/)