Based on the invoice amount approval will go for particular approvers

Summary:

Hi the requirement is like we have created an integration it is a scheduled on soo in that integration we have called on report with invoice details of amount soo and we are going to call the PCs workflow in that integrations so the invoice amount will come from the report.

once PCS trigger based on the amount the approval emails will go for the approval so for each threshold amount approvers will be increased

if amount threshold is increased then approvers will increased i have attached the screenshot

how can i achieve this like i can use decision model but how can i use a single human task .