If I have a workflow and I want the Next Approver to be the User's Supervisor's Supervisor or higher, can I achieve that with a workflow or would I need to write a SuiteScript to do that?

A workflow can only do a join to 1 level. So it could do the user’s supervisor’s supervisor. Unless you stored higher levels of supervisor on the employees record in other fields. Suitescript would also work

That's helpful information, thank you! I am working on creating a new workflow to replace an existing one. Any idea on how to make mine the default in the sandbox for testing?

Change the status of the old workflow to Not Initiating

Also Will, If I don't remember wrong there should be one bundle about approvals and It also have amount limits Inside of the workflow for supervisors. Maybe that'll help too

There is a NetSuite Approvals Workflow, but I'm not entirely sure if that's what I need because that seems to have more to do with Vendor Bills. The existing workflow that I am either going to change or replace does not use that bundle and only has to do with Purchase Orders.