1. A computerized method of managing workload within a Workflow-Management-System (WFMS) said method being executable by said WFMS on at least one computer system, said WFMS comprising a process-model, said process-model comprising one or more activities being the nodes of an arbitrary graph, and directed edges of said graph defining a potential control-flow within said process-model, and said method comprising a determination-step, wherein said process-model is analyzed if a priority-execution-specification is assigned to said one activity comprising at least one Boolean-predicate and a priority-level, and, in the affirmative case, said method comprising a launching-step said launching-step evaluating said Boolean-predicate using a variable-value not comprised in said process-model but said variable-value being comprised in a context of an instance of said process-model, and, if said Boolean-predicate evaluates to TRUE, said launching-step launches execution of said one activity in said activity's execution-environment with an execution-priority specified according to said priority-level.