Ok, this one was a bit more involved because it uses code :) Short answer: you need to use hook_form_alter() to take control over that particular form. Fear not! I will show you how to find these things and edit them quickly :D
Longer answer: the trick is to know where to find these things, so I spent a few minutes explaining my process for finding what I want to alter.
So that's the video of how I made it happen. Below is the steps I took to alter the user_login form for Commerce Kickstart 2.
STEP BY STEP
1) Find the form id ... I did this by inspecting and looking at the "id" ... for us, it was user_login
2) Search the text of the Drupal site for mention of this form_id
3) Copy function that modifies this form
4) Paste function inside the template.php for your theme (or your module_name.module file for a module)
5) Rename the first part of the function
6) Change html to your heart's content.
Josh
Comments
thrilled to find this video tutorial, thks for making it.
want to modify the Register form
eg just A valid e-mail address and eliminate the rest of the sentence.
No luck, search into profiles/Commerce_kickstart/commerce_kickstart_user.
Not in there. Some hint pls. Also, with 2 languages, where could the translated one be found?
Hymmm.
Hope u do more of these video ,