If your orders say to file for travel reimbursement through DTS, you'll use the DTS system with your RESERVE profile (your SSN with an R at the end). When your orders are approved in AROWS-R, use the information in the comments to create your DTS authorization and make travel arrangements, if needed. Sign and forward the authorization for approval, which happens at your detachment.
When you complete your orders, you'll go back into DTS and use the approved authorization to create and route the travel voucher. See the user guide below for detailed help. If you run into issues, contact your detachment and ask to speak to the DTS ODTA (Organizational Defense Travel Administrator.
Official DTS User Guide
Also available at https://www.defensetravel.dod.mil/site/training.cfm
Additional DTS Resources