Abstract: Systems, devices, computer-implemented methods, and tangible non-transitory computer readable media for developing and executing sandboxes with instances that perform complex, multi-step workflows for large-scale workforce management systems. For example, a computing device may control communications and operations associated with the sandboxes to avoid interference from the sandboxes with one another. The computing device can manage login-as content associated with corresponding sandbox instances being generated therewith. The sandboxes can be managed utilizing different states controlled by state machines for various types of operations associated with the sandboxes.