Is it correct to edit something in already edit mode?

If i want to change size of matrix or edit matrix then i can edit values,its descriptions and output of those values so i am displaying same screen in edit mode but the problem is how should i add the description for those values.

I have screen which has matrix calculation.The matrix screen is in the edit mode. User can edit values but user also want to add more information for those values.so i am clicking edit icon on the screen which is already in the edit mode. Is it correct way? If no then what will be the solution for that screen