The line chart shows the evolution of the available metrics over time. It requires a Date column in the dataset.
The plot is run at the total data level and at the dimension level. For each dimension the value labels are shown for the first, last, highest and lowest values.
The integrated legends can also be positioned on the right or on the left of the plot...
To plot the dimensions as small multiples, set the Plot Small multiples widget to True
You can resample the data means, and aggregate time series by a new time period, for example bi-monthly to get one data point every two months and smooth the chart out.