SinkDSM is custom component of the omeof framework. It is a usual Sink which adds additional constraints that allow to shift energy in certain time window. You can find further information about the component here: https://oemof.readthedocs.io/en/stable/oemof_solph.html#sinkdsm-custom
DSM-Modelling.ipynb describes the functionality of the component as well as their boundaries.
aggregation_example.ipynb shows possible use_cases, comparing different household aggregation levels.