Group Dynamics - The Plains

[Tyranoceros]

So when I go to The Plains of Eidolon I am automatically placed in a group although none in the group knowingly share any of the same objectives, of course, since it is free roam. Being in a group however is a nice convenience since rewards can be shared although there was no share in the completed mission. Here is the dilemma: One one of the group wants to leave everyone has to leave and if you leave group you lose all the gems and ore you have mined if you leave the group to avoid exiting the plains. Could there be a way to exit a free roam mission without requiring the entire group to get to the "extraction point"? Running it solo would lose some of the benefits of the group as well as reviving and assistance if required.