heelboy,
It depends. It looks like you are new to both HD and GD. One of the major differences between the two is that, unlike in HD, in GD you can only recruit players that will be on your list from your division.
What I mean is, under the recruiting tab, when you go to search, you will only be able to recruit players whose projected level is the same as your level. But, what you will have on the list and what other coaches will have on the list depends upon a variety of factors.
Ultimately, projected level identifies players who might sign with you. Any player above your level will never sign with you even if you spend your entire recruiting budget trying to sign them. Another coach could sign them, even if they are in your same division, for just an assistant coach scouting trip.
The thread at the top of the GD forums, GD's Guide to the Game, is a great place to start even if it was written in 2013. Almost all, perhaps all, of the info is correct.