This book covers three fundamental problems at the interface of multi‎-project management and human resource management‎:‎ the selection of projects‎,‎ the composition of small project teams‎,‎ and workload leveling‎.‎ Matthias Walter proposes optimization models and solution methods for these problems‎,‎ assuming multi‎-skilled workers with heterogeneous skill levels‎.‎ For the first time‎,‎ the author presents exact and heuristic methods that support managers to form small teams‎.‎ Additionally‎,‎ he outlines a new skill chaining strategy that increases workforce flexibility‎.‎