Edit in JSFiddle

var data = [
{project: 'Project A', date: new Date('2015-01-01'), sold:700, revenue: 100000},
{project: 'Project A', date: new Date('2015-02-01'), sold:710, revenue: 110000},
{project: 'Project A', date: new Date('2015-03-01'), sold:750, revenue: 125000},
{project: 'Project A', date: new Date('2015-04-01'), sold:810, revenue: 145000},
{project: 'Project A', date: new Date('2015-05-01'), sold:880, revenue: 162000},
{project: 'Project A', date: new Date('2015-06-01'), sold:888, revenue: 174000},
{project: 'Project A', date: new Date('2015-07-01'), sold:900, revenue: 180000}
,
{project: 'Project B', date: new Date('2015-01-01'), sold:90, revenue: 45000},
{project: 'Project B', date: new Date('2015-02-01'), sold:110, revenue: 62000},
{project: 'Project B', date: new Date('2015-03-01'), sold:150, revenue: 85000},
{project: 'Project B', date: new Date('2015-04-01'), sold:195, revenue: 101000},
{project: 'Project B', date: new Date('2015-05-01'), sold:220, revenue: 122000},
{project: 'Project B', date: new Date('2015-06-01'), sold:260, revenue: 154000},
{project: 'Project B', date: new Date('2015-07-01'), sold:300, revenue: 180000}
];

var chart = new tauCharts.Chart({
		dimensions: {
    	project: {type: 'category', scale: 'ordinal'},
      date: {type: 'order', scale: 'period'},
      sold: {type: 'measure', scale: 'linear'},
      revenue: {type: 'measure', scale: 'linear'}
    },
		data:data,
    type: 'line',
    x: 'date',
    y: ['project', 'revenue'],
    guide: [
    {
        y: {
            label: { text:'Project' }
        }
    },
    {
        x: {
            label: { text: 'Time' },
            tickPeriod: 'month',
            tickFormat: 'month-short'
        },
        y: {
            label: { text:'Revenue (USD)' },
            autoScale: false,
            min: 50000,
            max: 200000
        }
    }],
    plugins: [
        tauCharts.api.plugins.get('layers')({
            mode: 'dock',
            showPanel: true,
            // Default values:
            // title: "Layers",
            // label: "Layer Type",
            // axisWidth: 45,
            layers: [
                {
                    type: 'line',
                    y: 'sold',
                    guide: {
                    		label: { text: 'Units Sold' },
                        min: 0,
                        max: 1000,
                        autoScale: false,
                        scaleOrient: 'right',
                        textAnchor: 'start',
                        zIndex: -1
                    }
                }
            ]
        })
        ,
        tauCharts.api.plugins.get('legend')()
        ,
        tauCharts.api.plugins.get('tooltip')()
    ]
});

chart.renderTo('#target');