In Tableau, you can put several Sheets in one Dashboard, just by dragging the sheets onto the dashboard and rearranging.
From your screenshots, it looks like that could be done in your case.
Could you attach a sample workbook, so we can give specific tips for your situation?
how do I attached the workbook?
First, you save your workbook as a packaged workbook. (File/Export As..)
Then, you type in a reply under my reply here, and select "Advanced Editor and add an attachment:" in the upper right hand corner of the reply window.
Now your reply window looks bigger, and in the lower right hand corner there appears an Attach button
Select and attach your previously saved file.
Note: if your data is confidential, you may want to either mock it up with Superstore data or anonymize your data as per these instructions:
This is an article on why and how packaged workbooks: Packaged workbooks and flows: when, why, how