Multiple trends on one graph

Am I missing something really simple?

I know its possible to put multiple trends on one graph but following the instruction manual it only shows how to do a simple one trend graph.

The application note has this cool 3 trend graph with a data/trend button. How was that achieved?

 

function is 'auto created' in the UI by the NAC/SHAC.

on the right is option buttons for single trend/ multiple trends.
on the top left you click on each trend you wish to display.

 

Thanks for the reply coppo. Would you be able to share a screenshot? I honestly cannot see a multiple trend option button for the life of me

 

@coppo I've found what you mean. Sorry, I meant how to do have multiple trends on a trend graph embedded in a visualisation

 

You should see a button like I've shown on the attachment (your colours will like be different- purple!). Having selected Multiple Trends you click the list icon in the top left corner and choose the trends that you want to display over the top of each other.