How to align chart elements (dots) in chart to bars?

you need to use an xy-scatter series rather than line.

the line chart series will be centered over the column cluster.
with the xy-scatter you can define the x position

post example file. I can not tell what you did from a picture.

Also explain where the markers should be positioned

Hi.

The file is located here:

https://app.box.com/s/2940bgyz7mg4g0al6uvk (box link)
https://drive.google.com/file/d/0B31...it?usp=sharing (google docs link)

What I want:
for each procut there are 6 data criteria.

I want, that Criteria1 and Criteria 2 would be displayed as Bar.
Then:
Criteria 1A and Criteria 1B would be displayed as data points, and would be positioned above Criteria 1 bar.
Criteria 2A and Criteria 2B would be displayed as data points, and would be positioned above Criteria 2 bar.

Same for each of the products.

At the moment, Criteria 1A, 1B 2A and 2B are displayed as data points of the line chart.

So convert those lines to xy-scatter and then change X values range from using column A labels to defined x values.

Please use forum attachment feature instead of 3rd party sites.

correct. you will need to alter x values if number of columns changes

Alternatively you could change your data layout. use lines instead of xy-scatter.
you will need to set column overlap to 100 and gap to zero.

now the line markers are centrally positioned over each column