diff --git a/config/corne.keymap b/config/corne.keymap
index 41ee61b..dbbc28e 100644
--- a/config/corne.keymap
+++ b/config/corne.keymap
@@ -1,8 +1,17 @@
 #include <behaviors.dtsi>
 #include <dt-bindings/zmk/keys.h>
+#include <dt-bindings/zmk/bt.h>
 #include <dt-bindings/zmk/mouse.h>
 
 / {
+    conditional_layers {
+        compatible = "zmk,conditional-layers";
+        tri_layer {
+            if-layers = <1 2>;
+            then-layer = <3>;
+        };
+    };
+
     keymap {
         compatible = "zmk,keymap";
 
@@ -34,5 +43,13 @@
             >;
         };
 
+        layer_adjust {
+            bindings = <
+&bootloader        &none        &none        &none        &none         &none             &none &none &none &none &none &bootloader
+ &bt BT_CLR &bt BT_SEL 0 &bt BT_SEL 1 &bt BT_SEL 2 &bt BT_SEL 3  &bt BT_SEL 4             &none &none &none &none &none       &none
+      &none        &none        &none        &none        &none         &none             &none &none &none &none &none       &none
+                                             &none        &none        &trans            &trans &none &none
+            >;
+        };
     };
 };