Board Thread:Off Topic/@comment-25396609-20160319212213/@comment-27082610-20160331010135

Pretty much. The way the guild's set up is that each rank of mercs can only take up to a certain rank of missions, but if you team up you can go one rank above that. Picking a high ranked mission on your own as a rookie will get you kicked out of the guild if it doesn't get you dead.