add dashboard settings and customer create

app/controllers/settings/employees_controller.rb

@@ -6,7 +6,11 @@ class Settings::EmployeesController < ApplicationController
   # GET /employees
   # GET /employees.json
   def index
-    @employees = Employee.all
+    if current_user.role == "supervisor"
+      @employees = Employee.where("role in ('cashier', 'waiter')")
+    else
+      @employees = Employee.all
+    end
   end
 
   # GET /employees/1