Which activity is not allowed in a 3 compartment sink

Three compartment sinks are used commercially by hotels or restaurants.

Each compartment in the sink is used for separate purpose.

First compartment is used for Washing the dishes, second one is used to rinse the dishes and the third one is used to sanitize the washers’ hands.

The activities that are not allowed in these compartment are washing of cleaning clothes, washing of meat or vegetables, hand washing, throwing of wastes etc