Matrix visual formatting

Hi Community..!!

I am using above matrix visual 

I want to display row total based on Tactic column as u can see highlighted green in color.

I do not want to display row total based on Subtactic as u can see highlighted red in color.

Could u please help me to resolve this?

please tell me the formatting option for the same.

Note : Tactic , Subtactic, Group and Subtactic Group all are in row field and Activity t1,t2 are in value field.