In Adobe Workfront, when multiple users are assigned to a single task, the system designates a "Primary Assignee." This designation is determined by the order of assignment. The very first user assigned to the task automatically becomes the Primary Assignee. This user is typically considered the main point of contact for the task, responsible for coordinating the effort with other assignees and for marking the task as "Done" upon completion. The primary assignee can be changed manually after the initial assignments have been made.

A. By the user on a task that has a primary job role.

A user's primary job role is a profile-level attribute used for resource management and capacity planning, not for determining the primary assignee on a specific task.

B. By the Home Team assigned to a task.

A user's Home Team is an organizational attribute. While a task can be assigned to a team, this does not determine which individual user becomes the primary assignee.

1. Adobe Workfront Documentation - Assign tasks: In the section "Assign multiple users to a task

" the documentation explicitly states

"The first user you assign to the task becomes the task Primary Assignee. The Primary Assignee is responsible for coordinating the work on the task and for marking the task Done."

Source: Adobe Experience League

Workfront Documentation. (Accessed under the path: Workfront > Get Started > Adopt & govern Workfront > Create & manage work > Manage tasks > Assign tasks).

2. Adobe Workfront Documentation - Edit task assignments: This document details how to modify assignments

including changing the primary assignee

which reinforces that the initial primary status is set by assignment order. It states

"You can change the primary assignee for a task or issue that has multiple assignees."

Source: Adobe Experience League

Workfront Documentation. (Accessed under the path: Workfront > Get Started > Adopt & govern Workfront > Create & manage work > Manage tasks > Edit task assignments).