How to change default manager under company information? Expense approver shows correct manager but manager under company information is incorrect
It does not sound like your company allows you to choose your own manager. In that case, you would need to reach out to your company's Concur Administrator to have them assist you. They may have to manually update your manager in Concur and/or update the HR feed into Concur.
If you do not know who your company's Concur Administrator(s) is, I would recommend looking at the Company Notes section of the Concur homepage, reaching out to your supervisor, IT or Finance. They should be able to let you know who to contact about this issue.
Hope this helps,