Please find the relevant information here.
However, the user can submit the expense in Lanes & Planes via the expense and expense report. You can find more information on the expense and expense report here.
National Tickets, which are sold and offered directly from Deutsche Bahn, can be booked via Lanes & Planes. To do so, please go to the booking page and enter the starting point and the destination.
Now select the train connection with the Regional Express and the ticket type Regio Ticket.
Please note that these tickets are often only valid from 9:00 am.
Please find here an example: