AP Invoice Approval Workflow Top Participant

Summary:

How to dynamically populate Top Participant in AP Invoice Approval Workflow rules?

Content (please ensure you mask any confidential information):

Need a way to dynamically populate Top Participant in AP Invoice Approval Workflow rules as this is currently hardcoded with a username. Issues are faced if this user were to retire or leave the company.

Is there a way to dynamically update this field using SQL or any other method?

We reviewed the option of using Approval Groups so that the change would only need to be made in one place instead of each single rule using Top Participant but this is not possible.