Customize task allocated email for BIP based notification ?

Summary:

Is it possible to customize the email sent when a task is allocated (FYI and Action Required), for Journeys set as "BIP based notification" ?

Content (required):

Hello,

We have a Journey / Checklist that is set up as "BIP based notification".

Each time a task is allocated, the performer receives an email like this (in this screenshot it is an Action Required one) :

Where can I find the template for the Action Required and FYI email notifications, in order to modify them ?

I know about these 3, which I found in OTBI : Shared Folders / Human Capital Management / Workflow Notifications, but they are for the notifications in BPM Worklist, not the emails.