We don't use any specific process, but like the people who use scrum our goal are still to make our development more smooth and efficient, the leader assign tasks through Trello, after we get our tasks we will evaluate it by ourselves, it we have any problems with this task then we will have to discuss with the PO or our leader, if there is none then we start to work on it. after we finished it we will move it to Done status the QA will test it if they got time, after QA finished the testing the PO will check it aging, if noting wrong then it will go production. I have used scrum once, I don't know if it is the scrum's problem or it's the one who use it, just don't give me a good impression.