The rules that determine which Approvers will be selected for each particular request can be set in the approval matrix. The conditions are based on the master data received from QuickBooks Online: Vendors, Products/Services, Locations, etc.
This is how you add an alternative rule
In the main menu, find your Organisation and go to Approval workflows under Workflows and settings:
Open the respective workflow:
In the step, open the approval matrix by clicking on the Matrix icon:
Then click on the Three-dot icon next to the Approver for whom you want to add an alternative rule. Select "Add an alternative rule" to specify the rule:
To remove a rule, click on the X icon next to the line you want to remove:
Save your changes by clicking on DONE in the upper right-hand corner of the matrix and save/update the workflow.