Add a more advanced level to the current level chain

[AnneHommelberg]

Add a level example which controls more than one piece of equipment at the same time. (Similar to the "Vader Jacob" music example)

[AnneHommelberg]

Change the current ship block to a "on start do ...". In which activity is defined, dredge activity should be given a mover, loader, unloader, origin, destination. Could be given condition?

[AnneHommelberg]

Important to keep in mind:
How could the user control which (dredge) activity is done when. What happens when several activities are placed underneath each other? What if they are put in separate on start do blocks? Is this what the user would expect? Does this give enough options to the user to define any order of activities they might want?