How to draw on the document pdf?

Hello NweNiLinn,

We see you've posted about drawing on a PDF document on your iPad. We have a few suggestions to help. First, you can use our Markup feature on your iPad for PDF documents. Start with the steps here: Use Markup on your iPhone, iPad, or iPod touch - Apple Support

If the PDF document needs to be send via email, use these steps:

Mail 

1. Open Mail and tap the compose button  to start a new email. Or reply to an existing email.

2. Tap inside the body of your email, then tap the gray arrow icon  or tap Return to open the format bar. You can also tap inside your email, then tap the cursor and select Insert Photo or Video or Add Attachment. You might need to tap the arrow icon  to scroll through the options.

3. Tap the Camera button  or the Document button , then look for the photo or PDF that you want to attach and mark up.

4. Tap the attachment, then tap the gray arrow icon . Tap the Markup button  to add your markup. Tap the plus button  to add a signature, text, and more.

5. Tap Done, then send your email.

You can also edit PDF attachments in the Books app on your iPad using steps from this resource: Save and edit PDFs to the Books app on your iPhone or iPad - Apple Support

In reference to your question "How to draw and do login to owner password?", we aren't quite sure what you mean. If our above steps don't resolve that concern, reply back with additional details.

Take care.