Many activities these days, be it sports, social work, arts or free and open source software, are organized in communities. If backed by a respective legal entity, this not only helps with getting donations and entering contracts, but also puts statutes and rules in place that set forth the values and ideals all contributors share and abide to.
Inside these communities, there can be various roles. Some of them as formal requirement and with annual or biannual elections, e.g. the board of directors or the supervisory board, others within dynamically grown groups that can change frequently. Either of those are ideally composed of experienced and enthusiastic community members who take leadership and responsibility.