Good record keeping is an essential part of making sure people understand assignments and hold team members accountable for their assignments. Your team should develop a form for each team person to fill out which describes their efforts. Keep organizing team meetings short and well-organized. They should take place at a convenient time and place and there should be an agenda. Stick to the agenda, dole out assignments and adjourn the meeting on time.
People can stay and talk after the meeting, but end the meeting so some people can leave.
Otherwise you may find that the team members will not attend meetings. Another principle for working with committees is to give recognition for achievements. Every campus has many issues around which good organizers can attract new members and increase membership participation. But some issues are better to organize around than others. There are certain questions that need to be answered before your team can decide whether a given issue should be the basis for a group action.