I tried In the same way in the sheet selector you have created another dashboard2 in that you have selected two sheets it is displaying according to that but when have created it is displaying two sheets not in dynamic way as you have shown .
Please follow the below Process..
Create a calculation to support your parameter called Dynamic View.
Note:while droping the calculation in the filter shelf in bar chart sheet make sure the parameter is selected as Bar as seen in the below Screenshot
Note:while droping the calculation in the filter shelf in Map chart sheet make sure the parameter is selected as Map as seen in the below Screenshot
Go to Dashboard and Drop Horizontal object first in the dashboard
Now just Drop both the sheets in the Horizontal Box as seen in the screenshot below..and Hide the Tittle.
Go through Sheet Selector in Tableau in YouTube you will find videos for better understanding..
Yeah its working thanks for the reply you helped for solving the solution and could you please tell is there proper site for getting clear understanding more on parameters & Calculations
I believe Tableau officially have provided a training videos to learn each topic,, Link below for reference..
I believe go through the Community it will make you to learn deeply in Tableau..