i am working on this project where we are taking ecg and ppg signals from subjects. there will be three sets of data before the intake of green tea, three sets of data after thirty minutes of having green tea, three sets of data after sixty minutes of taking green tea. so each time we have to set the name of the data taken and manually save it. i am seeking for help on how to get started with the code where after the signal is taken it will ask the user if he wants to save it and the name of it on matlab. simple steps on getting started would be apprecciated!