Custom data label line and stack column chart

[bobik2022]

Hi,

I have to ask. Is it possible to make a custom data label on line and stack column chart?

For example in Excel i can schow two groups, and add data labels only on one group as sum of group 1 and 2. (showa labels as a value) 

The columns are actual and the labels up the columns are the budget.

72,1 is 7,6 + 64,5

73,9 is 8,1+ 65,8 

I'd like to show the sum of that two labels as a sum value but not to show that labels separantly. 

I wouldn't like to add for my sum label the dark blue values from column ( for example 6,3). 

It will be great to show new custom label in the place where are 64,5, 65,8 ore somwhere, but under the blue dark value