Compliment of the season to you all, what i understand concerning post as in terms of us as newbie, you will doing your from day one and it will be showing on your activity till it will reach a particular number of posting that as a newbie your posting will be reflecting on your activity or your activity will be increasing every two weeks.
He is not asking about how activity is counting. He asked about newbies posting restriction which I have given him the answer above which you can see in the above table. About what you posted, if a newbie starts to post, how activity will be counting until it reaches 14. After it reaches 14, it will be counting 14 at once every 14 days.