Check boxes allow a user to make a selection from options. Many times they are used for yes or no answers.
To make a check box: Dreamweaver
  
  1. Put your cursor where you want it in the document window.
2. Select Insert>form object>check box 
  from the main menu. 
  Or click on the form button in the object panel: form section:
 
 
3. In the Properties panel:
  -give it a name, now the name should be the same for all checkboxes in a set.
  -give every checkbox item a unique value in the "Checked Value" field.
  -choose an initial state of checked or unchecked (checked will have it selected 
  initially) 
  
   
 
In HTML
Typing it in.
ex.
To get the above put this into the <body> section of your html:<form name="form3" method="post" action="" 
  enctype="multipart/form-data">
  running: 
  <input type="checkbox" name="activities" 
  value="running">
    swimming: 
  <input type="checkbox" name="activities" 
  value="swimming">
    hiking: 
  <input type="checkbox" name="activities" 
  value="hiking">
   skating: 
  <input type="checkbox" name="activities" 
  value="skating" checked>
  
  </form>