HOW TO ADD A GRAPH IN A DASHBOARD ?

You have three possibilities :

1. From the chart tab, after working on a graph
2. Add a graph from a tab directly
3. Add several graphs

Add a chart from the chart tab

From the chart tab, click on the dashboard icon (1) to save the graph you have just worked on your dashboard:

Choose an existing dashboard or create a new one (1).
Choose an existing tab or create a new one (2):

Add a graph directly from a tab

Click on the three dots at the top right, and select "Add a graphic". You will be redirected to the chart tab and follow the same procedure as in "Add a chart from the chart tab, after working on it".

You can also click on the "+" at the bottom right and select "Add a graphic":

Add several graphs

Click on the icon (1) to add all the graphs filtered in a dashboard:

You can put up to 96 graphics in a tab - if there are more, the icon is grayed out.