If you are expecting to create side by side bar + Line, it's not easy on Tableau.
Here is a example, but you need to re-shape the data from measure value to dimension.
Side-by-side bars with the line ,another requirement
If you could attach sample data as twbx format with expected view illustrated, we can assist little bit more.
Become a Viz Whiz on the Forums!
Support the Community and master Tableau.
Retrieving data ...