What type of approval rule allows for multiple approvers at once?

The type of approval rule that allows for multiple approvers at the same time is known as Parallel approval. In a Parallel approval process, several approvers can review and approve a request simultaneously, rather than waiting for one approver to finish before the next can begin their review. This approach speeds up the approval process significantly, as multiple individuals can engage at the same time and their approvals can be collected concurrently.

In contrast, a Sequential approval rule requires that each approver reviews the request one after another, which can create bottlenecks if one approver delays the process. Independent approval does not typically imply a structured process involving multiple approvers; it refers to approvers acting independently of one another, which can lead to disorganized and inefficient approval flows. Hierarchical approval involves levels of authority where approvals flow through an established hierarchy, typically leading to a more structured but potentially slower process than Parallel approvals.