On the Group Application, you must enter a group leader, and that is his/her CID number. That application gets a number assigned.
If that application number is drawn,all in that group gets a tag as long as there is enough tags left in the quota for all.If not,no one gets tag.
If you submit a single application,it too is assigned a number.
That number and group application number has the same weight.
The only advantage in applying as a group is you all get a tag,or no one gets a tag. So if four people apply as a group, there is not a 4X's better chance of drawing tag vs a single application.
If both parties have the same number of points you are OK.If not,the person with the lowest number of points is the deciding factor. A resident applying along with a nonresident gets little trickier and I can't explain that coherently