How to create a button to open another app in new mode and passing parameters

Hope you can help me. I’m trying to create a button in some forms that when they are saved the you can create other form with some fields from that form.

Example:
You have a call record form where you enter the customer and contact. When the call is finished I want a button to create a task passing the information to that form with the customer and contact.
I made a button but it opens the other form y update mode.

Also on a field with select would be great yo have a button with edit (passing the parameter) and a new one.

Please advice.
Thanks.
Santiago