Click the Settings gear at the chart’s top-right to open the Series Settings panel:
Chart type - bar, line, area, pie, or scatter.
X axis - a category or date column.
Y axis - one or more numeric measures, each with an aggregate (sum, avg, count, min, max).
Sensible defaults. A chart appears immediately (first date/category becomes X, first numeric becomes Y); tweak from there. It visualizes exactly the rows you see, respecting any filters applied.