In the App via "Settings -> Your Tariffs" you can press the button "Set up new tariffs" to switch to Dynamic tariffs.
First you need to select the market of which you wish to retrieve the Dynamic tariffs.
Next to the dynamic tariffs there are also some additional costs and multipliers that can be added for the cost calculation.
Fixed rate = a fixed cost per kwh added to the dynamic tariff
Multiplier = a additional multiplier to also calculate in the additional profit or any other cost that the energy supplier adds in.
Tax multiplier = a tax multiplier that can be added, if your tax is 21% then you need to set 1.21 as multiplier.
At the end of the flow you will also see a graph of the Dynamic tariffs for today.
You will also see this as a white line in the Electricity consumption graph.