I can recommend that you use specialized time tracking software, such as https://www.monitask.com/en/. This application allows you to track employee activity by recording their time in real time. It automatically takes screenshots and records what the employee is doing at each moment, which helps to avoid the situation when someone is “hanging online” but not performing tasks. The software helps to set clear boundaries and record when a person is actually working. It also helps prevent transparency issues as results are tracked objectively. However, it's important to remember that such tools must be used correctly so that employees don't feel overly controlled or pressured. Ideally, it is important to have an open dialog within the team so that everyone can understand the importance of their roles and responsibilities.