This paper presents an analysis of resource assignment for multi-hop communications in millimeter-wave (mm-wave) wireless personal area networks. The purpose of this paper is to figure out the effect of using directional antennas and relaying DEVices (DEVs) in communications. The analysis is performed based on a grouping algorithm, categorization of the flows, and the relaying DEV selection policy. Three schemes are compared: Direct and Relaying Concurrent Transmission (DRCT), Direct Concurrent Transmission (DCT), and Direct Non-Concurrent Transmission (DNCT). Numerical results show that DRCT is better than DCT and DCT is better than DNCT for any antenna beamwidths under the proposed algorithm and policy.