Sit everyone together and set some ground rules. Ask everyone to take their dishes back to the kitchen when they finish, and wash their own stuff straight after.
Alternatively, u can agree to pile the dirty stuff in one place until a certain time, and take it in regular turns to wash them.
Also things should be returned to their own places etc.
If anyone sees a full rubbish bin they should empty it asap.
Everyone should cooperate with each other in joint family system,or in any family system.
As he said SET THE RULES FOR EVERYONE.