diff --git a/Agents.md b/Agents.md
index eb91bf2..3cfb43f 100644
--- a/Agents.md
+++ b/Agents.md
@@ -484,9 +484,28 @@ Create `Configuration/Release.xcconfig`:
 
 In `project.pbxproj`, add file references and set `baseConfigurationReference` for each build configuration:
 
-1. Add xcconfig file references to PBXFileReference section
-2. Set `baseConfigurationReference` on Debug/Release configurations
-3. Replace hardcoded values with variables:
+**1. Add xcconfig file references to PBXFileReference section:**
+
+```
+/* Use SOURCE_ROOT and full path from project root */
+EACONFIG001 /* Base.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = AppName/Configuration/Base.xcconfig; sourceTree = SOURCE_ROOT; };
+EACONFIG002 /* Debug.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = AppName/Configuration/Debug.xcconfig; sourceTree = SOURCE_ROOT; };
+EACONFIG003 /* Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = AppName/Configuration/Release.xcconfig; sourceTree = SOURCE_ROOT; };
+```
+
+**IMPORTANT**: Use `sourceTree = SOURCE_ROOT` (not `"<group>"`) and include the full path from project root (e.g., `AppName/Configuration/Base.xcconfig`).
+
+**2. Set `baseConfigurationReference` on project-level Debug/Release configurations:**
+
+```
+EA123456 /* Debug */ = {
+    isa = XCBuildConfiguration;
+    baseConfigurationReference = EACONFIG002 /* Debug.xcconfig */;
+    buildSettings = { ... };
+};
+```
+
+**3. Replace hardcoded values with variables:**
 
 ```
 PRODUCT_BUNDLE_IDENTIFIER = "$(APP_BUNDLE_IDENTIFIER)";