Arrange a meeting and help the team work it out should be done first.
Step-by-step explanation:
A team is a group of people working together with common goals to achieve. There must be a collective co ordination among the team members and a difference of interest free environment should be available so that the team will be successful in achieving the goals.
In the scenario give, there is an issue in deciding the timings which should be fixed or flexible. Some of the team members wants the timings to be flexible while others want fixed timings. As a team leader, I would take a first step in arranging a meeting to discuss about the pros and cons of the fixed and flexible work timings and allow the team members to work it out.