Adjusting mark up

It would be a real time saver if I could adjust mark up for a batch of items, right now I have to do it one line at a time. I have tried to copy and then paste a new markup amount. The system lets me copy the mark amount, but paste is not available on a right click. It would be a really helpful feature to be able to copy and paste a new markup value into multiple cells at once. Better yet if it is possible being able to change mark up for materials and labor separately on a global or job by job level would be even better.

Another improvement would be if I could adjust the mark up at the template level and have the change effect all the children of the template. Perhaps I am doing something wrong or missed something in the training, but if I want to change my markup I am doing it for every item in every template line by line.