I want to create a child case for a case in lightning. From the related list "Related cases", when I click on "New", the account field on the child case is not fill. For information, I am using person account with cases which have recordtypes.
I want to be able to default the account id in the account field of the child case. I wanted to use the standard "new child case" action, but when i added it on my page layout, it is not showing.
I read this article https://help.salesforce.com/articleView?id=actions_considerations.htm&type=5 about the child case button, and i am admin of the system, and have full rights on the recordtypes and the parent field, but can't display that action.
What I am missing?