Zoho Expense Report Multilevel Approvals

Zoho Expense Report Multilevel Approvals

Hi 
I have set up the Expense Report approvals. it goes from the submitter to the 1st approver. Once the 1st approver approves, then it goes to the 2nd approver.
My question is: When the 1st approver is away, the approval process does not progress to 2nd approval. Can you be able to put many approvers in the 1st approver's place? If one of the 1st approvers is away, the others in the 1st approver's group can approve the expense report.

Please advise as soon as possible