If you please provide the sample screenshot what you are exactly looking for that would be helpful.
We can create total with new sheet and add it to dashboard with floating.
Please see attached image, i want to add the totals of my dashboard to the far left, or at the top as in the attached sample, without having to edit the sql.
Thanks Sankar, can you provide an example?
JM- top grand total.twbx.zip 6.2 KB
You may wish to up-vote this idea >> http://community.tableau.com/ideas/1320
The only way I know is as Sankar suggests which is to create the totals on a separate sheet and float both sheets on a dashboard. Then you can place the totals wherever you need. I have quickly mocked something up in the attached. Both tables are different sheets.
You can use dashboard actions should you need to link the 2 sheets/ tables
This is a very useful blog posting, it covers a number of grand total topics but may not cover formatting.
JM- top grand total.twbx 10.1 KB