@rajusharma_chap
Can you clarify a little about what you're looking for. I understand that what you call "mark" is what we in the US call "grade", but the "assignment group" part of that is ambiguous to me.
It could be "(assignment group) grade" where you the combined score for the assignment group. This appears in the gradebook as a summary column. For example, I got 95% on homework and you want the 95% rather than the individual grades that make up the 95%.
It could be "assignment (group grade)" where you want the grade that was given on a group assignment that was assigned to the group before it was overridden at the individual level. For example, the group got a 3 out of 5, but Stuart got a 2 out of 5 and not what the group got.
It might be something else completely.
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