No, Chrome River is a completely online system.  Once you submit the Pre-Approval or Expense Report, the system will automatically route it for approval.

The expense owner creates the report and submits it. The report routes to a review team (most often the Fiscal Shared Services team serving your department) for a policy and accounting review. The report is then routed to the expense owner's supervisor for approval, per State of Montana policy. Upon approval, the report then routes to OIP, OSP, UBS, as applicable, for final approval.
If a delegate creates a report on behalf of an expense owner, the first stop (even if the expense owner does the initial submit) is the expense owner. This ensures the expense owner has the opportunity to review anything submitted on their behalf.

State of Montana policy clearly states that supervisors must approve travel and P-card expenditures.