Question $3$ Twenty information technology specialist programmers get together to provide an open$-$source, non$-$profit quality online encyclopaedia which can be used as a reference tool, like Wikipedia, for the common good of members, who may be students or non$-$students. Pages in the encyclopaedia will be edited by members, who will pay $$5\mathrm{.}00$ per year to subscribe to the group. None of the members feel that incorporation is warranted at this stage.$($a$)$ What type of legal structure is the group?$($b$)$ At what point, and in which circumstances, might it be necessary for the group to incorporate?