🎨 MULTI_MANUAL => MULTI_E_MANUAL

Marlin/src/lcd/marlinui.cpp

     xyze_pos_t ManualMove::all_axes_destination = { 0 };
     bool ManualMove::processing = false;
   #endif
-  #if ENABLED(MULTI_MANUAL)
+  #if ENABLED(MULTI_E_MANUAL)
     int8_t ManualMove::e_index = 0;
   #endif
   AxisEnum ManualMove::axis = NO_AXIS_MASK;
   // Tell ui.update() to start a move to current_position after a short delay.
   //
   void ManualMove::soon(const AxisEnum move_axis
-    #if MULTI_MANUAL
+    #if MULTI_E_MANUAL
       , const int8_t eindex/*=-1*/
     #endif
   ) {
-    #if MULTI_MANUAL
+    #if MULTI_E_MANUAL
       if (move_axis == E_AXIS) e_index = eindex >= 0 ? eindex : active_extruder;
     #endif
     start_time = millis() + (menu_scale < 0.99f ? 0UL : 250UL); // delay for bigger moves

Marlin/src/lcd/marlinui.h

 #endif
 
 #if E_MANUAL > 1
-  #define MULTI_MANUAL 1
+  #define MULTI_E_MANUAL 1
 #endif
 
 #if HAS_DISPLAY
   class ManualMove {
   private:
     static AxisEnum axis;
-    #if MULTI_MANUAL
+    #if MULTI_E_MANUAL
       static int8_t e_index;
     #else
       static int8_t constexpr e_index = 0;
     #endif
     static void task();
     static void soon(const AxisEnum axis
-      #if MULTI_MANUAL
+      #if MULTI_E_MANUAL
         , const int8_t eindex=-1
       #endif
     );

Marlin/src/lcd/menu/menu_motion.cpp

 
 #if E_MANUAL
 
-  static void lcd_move_e(TERN_(MULTI_MANUAL, const int8_t eindex=-1)) {
+  static void lcd_move_e(TERN_(MULTI_E_MANUAL, const int8_t eindex=-1)) {
     if (ui.use_click()) return ui.goto_previous_screen_no_defer();
     if (ui.encoderPosition) {
       if (!ui.manual_move.processing) {
         const float diff = float(int32_t(ui.encoderPosition)) * ui.manual_move.menu_scale;
         TERN(IS_KINEMATIC, ui.manual_move.offset, current_position.e) += diff;
         ui.manual_move.soon(E_AXIS
-          #if MULTI_MANUAL
+          #if MULTI_E_MANUAL
             , eindex
           #endif
         );
       ui.encoderPosition = 0;
     }
     if (ui.should_draw()) {
-      TERN_(MULTI_MANUAL, MenuItemBase::init(eindex));
+      TERN_(MULTI_E_MANUAL, MenuItemBase::init(eindex));
       MenuEditItemBase::draw_edit_screen(
-        GET_TEXT(TERN(MULTI_MANUAL, MSG_MOVE_EN, MSG_MOVE_E)),
+        GET_TEXT(TERN(MULTI_E_MANUAL, MSG_MOVE_EN, MSG_MOVE_E)),
         ftostr41sign(current_position.e
           PLUS_TERN0(IS_KINEMATIC, ui.manual_move.offset)
           MINUS_TERN0(MANUAL_E_MOVES_RELATIVE, manual_move_e_origin)
 #if E_MANUAL
 
   inline void _goto_menu_move_distance_e() {
-    ui.goto_screen([]{ _menu_move_distance(E_AXIS, []{ lcd_move_e(TERN_(MULTI_MANUAL, active_extruder)); }, -1); });
+    ui.goto_screen([]{ _menu_move_distance(E_AXIS, []{ lcd_move_e(TERN_(MULTI_E_MANUAL, active_extruder)); }, -1); });
   }
 
   inline void _menu_move_distance_e_maybe() {
         SUBMENU_MOVE_E(E_MANUAL - 1);
       #endif
 
-    #elif MULTI_MANUAL
+    #elif MULTI_E_MANUAL
 
       // Independent extruders with one E-stepper per hotend
       LOOP_L_N(n, E_MANUAL) SUBMENU_MOVE_E(n);

Marlin/src/lcd/tft/ui_1024x600.cpp

     #endif
 
     ui.manual_move.soon(axis
-      #if MULTI_MANUAL
+      #if MULTI_E_MANUAL
         , motionAxisState.e_selection
       #endif
     );

Marlin/src/lcd/tft/ui_320x240.cpp

     #endif
 
     ui.manual_move.soon(axis
-      #if MULTI_MANUAL
+      #if MULTI_E_MANUAL
         , motionAxisState.e_selection
       #endif
     );

Marlin/src/lcd/tft/ui_480x320.cpp

     #endif
 
     ui.manual_move.soon(axis
-      #if MULTI_MANUAL
+      #if MULTI_E_MANUAL
         , motionAxisState.e_selection
       #endif
     );