Step 1: Create Page
Step 2: Dashboard>>Appearance>> Menus
Step 3: Click on Create a new menu link.
Step 4: Enter the menu name at “Menu Name” field.
Step 5: Select the pages/posts/ categories and custom links tab from the left side. and Drag and Drop the selected tabs as you like.
Step 6: Choose Display location for the menu.
Step 7 : Click on Create menu button.