Hi,
You can show a forecast for a single line across a chart. So you can create for categories each a chart to display the forecast.
To show the forecast, Create a line chart then Go to Analytics Tab and Go to forecast.
Now Add a forecast line and edit the parameters such as year/month wise, number of years, and the line characteristics such as line type, color, etc
![](https://www.edureka.co/community/?qa=blob&qa_blobid=14867752151516624585)
![](https://www.edureka.co/community/?qa=blob&qa_blobid=9878796502484335409)
![](https://www.edureka.co/community/?qa=blob&qa_blobid=4653535588669809627)
So the forecast line is added.