Approval models : visibility and starting process

Hello,

I have several questions about approval models.

I've created a template with two approval steps and assigned it to a document class.

As a user, when I’m in a screen like Purchase Order and I add a document with this document class:

1. What happens to the visibility of this document?

   • Can only the owner and approvers see it?
   • Does the approval model restrict access in any way?

2. What impact does this approval model have on the document?

   • Does it change its status, permissions, or other attributes?

3. When I attach a document to an object (e.g., a Purchase Order), is it possible to trigger the approval workflow automatically?

   • From what I see, it seems that the document remains in a preliminary stage, and I have to go to the revision screen to start the approval. Is this the expected behavior?

Thanks in advance for your help!

Wishing you an excellent day.