Hi Have two columns (mirror columns) named total assets and total hours in subitems. How do I sum them up and show them on the main item level using sum formula?
In the subitems column menu (3 dot menu in column header) you can select “show summary in parent”.
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In order to complete the information.
In the menu of the column mirror, you can customize the information. In “settings” you can choose between SUM, AVERAGE, MEDIAN… etc.
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I tried that. It doesn’t show the sum but instead shows all assets separated by comma. Something like this “5,2,3,1,3”.
I don’t see those options. Can you elaborate?
When your subitems column is a text column, you will get 1,2,3
When your subitems column is a number column, you will get 6
It is neither. It’s a mirror column. Sorry I should’ve stated that. I’m pulling the values for hours and assets from a different board using connect board. Can you copy value from one column (mirror type) to another column (text or number type)?
That is a completely different story 
. As far as I know making doing the “create summary in parent” does shows mirror columns always as text. (1,2,3)