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you dont have to use right click u can also use the normal ctrl+c ctrl+v to copy and paste u just need to click to select the action you need and use the commands shortcuts like on any normal windows application... if u mean to paste between 2 actions a new action u cannot do that by using the above... but you can do it by doing the next thing that is also shown in the gif i posted... keeping ctrl down and drag the action you want to copy paste under or in the middle thats what im thinking you want....
however i dont agree with having more then 7 actions per condition event.