Tell me about case for implementation VLAN, I need case diagram, sequence diagram, activity diagram, scenario diagam!!! 
What kind of diagrams are you looking for?
i need the use case diagram, activity diagram, and sequence diagram
I’m not sure what kind of diagram you are looking for.
Maybe you can give use more detailed information about your setup, what you have tried and what does not work.
Well 
it doesn’t matter what diagram you looking for, cause there are one and only diagram that you NEED when using RouterOS: