diff --git a/.gitignore b/.gitignore
index b5bca2a..bbfa9ef 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 config.py
+instance_config_override.py
 run.py
 migrations/
 
diff --git a/README.md b/README.md
index 526a2e1..e5039db 100644
--- a/README.md
+++ b/README.md
@@ -59,6 +59,7 @@ The REST API is documented using Swagger (OpenAPI). After installing and running
 
 
 ## Change Log
+- 1.1.5 - introduced instance config override. Copy the sample to instance_config_override.py and customize you dashboard menu items easily. For normal installations no override is needed.
 - 1.1.4 - minor bug fixes and code cleanup
 - 1.1.3 - introduced configurable footer menu for links in bottom of the default template
 - 1.1.2 - minor security updates (removed unused JS files), setup.py now reads dependencies from requirements.txt
diff --git a/flowapp/__about__.py b/flowapp/__about__.py
index d65e0a5..c599dc3 100755
--- a/flowapp/__about__.py
+++ b/flowapp/__about__.py
@@ -1 +1 @@
-__version__ = "1.1.4"
+__version__ = "1.1.5"
diff --git a/flowapp/__init__.py b/flowapp/__init__.py
index 61543e7..9b9616a 100644
--- a/flowapp/__init__.py
+++ b/flowapp/__init__.py
@@ -30,6 +30,12 @@ def create_app(config_object=None):
     if config_object:
         app.config.from_object(config_object)
 
+    # Allow override of instance config from external file
+    try:
+        app.config.from_pyfile("../instance_config_override.py", silent=False)
+    except FileNotFoundError:
+        pass  # No override file, use defaults
+
     app.config.setdefault("VERSION", __version__)
 
     # SSO configuration
diff --git a/flowapp/constants.py b/flowapp/constants.py
index 975f99b..819f685 100644
--- a/flowapp/constants.py
+++ b/flowapp/constants.py
@@ -9,7 +9,7 @@
 DEFAULT_ORDER = "desc"
 
 # Maximum allowed comma separated values for port string or packet lenght
-MAX_COMMA_VALUES = 6
+MAX_COMMA_VALUES = 5
 
 SORT_ARG = "sort"
 ORDER_ARG = "order"
diff --git a/instance_config_override.example.py b/instance_config_override.example.py
new file mode 100644
index 0000000..5b93bec
--- /dev/null
+++ b/instance_config_override.example.py
@@ -0,0 +1,98 @@
+# This file can be simply ignored if you do not need to override anything
+
+# Example instance config override
+# If you need to override some settings, you can do it here.
+# Copy this to instance_config_override.py and customize
+
+
+# column names for tables
+RTBH_COLUMNS = (
+    ("ipv4", "IP address (v4 or v6)"),
+    ("community_id", "Community"),
+    ("expires", "Expires"),
+    ("user_id", "User"),
+)
+
+WHITELIST_COLUMNS = (
+    ("address", "IP address / network (v4 or v6)"),
+    ("expires", "Expires"),
+    ("user_id", "User"),
+)
+
+
+RULES_COLUMNS_V4 = (
+    ("source", "Source addr."),
+    ("source_port", "S port"),
+    ("dest", "Dest. addr."),
+    ("dest_port", "D port"),
+    ("protocol", "Proto"),
+    ("packet_len", "Packet len"),
+    ("expires", "Expires"),
+    ("action_id", "Action"),
+    ("flags", "Flags"),
+    ("user_id", "User"),
+)
+
+RULES_COLUMNS_V6 = (
+    ("source", "Source addr."),
+    ("source_port", "S port"),
+    ("dest", "Dest. addr."),
+    ("dest_port", "D port"),
+    ("next_header", "Next header"),
+    ("packet_len", "Packet len"),
+    ("expires", "Expires"),
+    ("action_id", "Action"),
+    ("flags", "Flags"),
+    ("user_id", "User"),
+)
+
+
+# Customize main menu
+MAIN_MENU = {
+    "edit": [
+        {"name": "Add RTBH", "url": "rules.rtbh_rule"},
+        {"name": "Add Whitelist", "url": "whitelist.add"},
+        {"name": "API Key", "url": "api_keys.all"},
+    ],
+    "admin": [
+        {"name": "Commands Log", "url": "admin.log"},
+        {"name": "Machine keys", "url": "admin.machine_keys"},
+        {
+            "name": "Users",
+            "url": "admin.users",
+            "divide_before": True,
+        },
+        {"name": "Add User", "url": "admin.user"},
+        {"name": "Add Multiple Users", "url": "admin.bulk_import_users"},
+        {"name": "Organizations", "url": "admin.organizations"},
+        {"name": "Add Org.", "url": "admin.organization"},
+        {
+            "name": "Action",
+            "url": "admin.actions",
+            "divide_before": True,
+        },
+        {"name": "Add action", "url": "admin.action"},
+        {"name": "RTBH Communities", "url": "admin.communities"},
+        {"name": "Add RTBH Comm.", "url": "admin.community"},
+    ],
+}
+
+# Customize dashboard - only include what you need
+DASHBOARD = {
+    "rtbh": {
+        "name": "RTBH",
+        "macro_file": "macros.html",
+        "macro_tbody": "build_rtbh_tbody",
+        "macro_thead": "build_rules_thead",
+        "table_colspan": 5,
+        "table_columns": RTBH_COLUMNS,
+    },
+    "whitelist": {
+        "name": "Whitelist",
+        "macro_file": "macros.html",
+        "macro_tbody": "build_whitelist_tbody",
+        "macro_thead": "build_rules_thead",
+        "table_colspan": 4,
+        "table_columns": WHITELIST_COLUMNS,
+    },
+}