Hi Ryan,
We have validated your reported scenarios. Please check with below options.
Query 1 : is there a way that the 'Total' attribute would be in the disabled/hidden state when the chart is initialized and then afterwards the user can enable it by clicking if he wants to
Yes, you can specify series visible property as false. This will render the legend but series won’t visible and you can display series by clicking the legend.
Query 2 : the user disables/hides attribute 'R' and then goes to the next day by clicking on the next button
Yes, you can disable the legend of first chart and then navigate to other charts. We have created sample using tab control with four charts and each chart has a single series. The data provided for each series is in hour and minutes difference. We have attached sample for your reference.
Kindly revert us, if you have any concerns.
Regards,
Durga G