It's always good to record where and how you researched your topic. .A research log keeps you on track and allows you to retrace your steps by identifying where you have researched (databases) what search terms you entered. It is. especially good for groups with many people actively researching simultaneously. A research log differs from research notes and citation managers (such as EasyBib).
Sometimes your topic may transform into something else or you may realize that your research has unsupported ideas in your argument. Sometimes events change quickly and you need to locate updated resources. You can look at where and how you searched for your sources and perhaps try another search or update your results list.
Working as a group can be stressful and challenging, bur also exciting. The more organized you are, the more efficiently you will work together to produce quality research. A video from University of British Columbia "Working in Groups," provides a nice introduction. See below for more tips.