Must be a multiple of 1
Since workers can return an assignment or drop out, some "spare" participants will be created: the oTree session will have 2 times more participant objects than the number you enter here.
You can make more properties configurable by adding them to your session config in settings.py.
Choose whether the experiment should be run on the random or the watts-strogatz network. Depending on that, change the SEQUENCES defined below in the constant (C) class.