Yes, it would appear that your family member has one case with multiple counts in that similar acts were performed on two different occasions.
Forgeries in Utah are classified according to how much money was misappropriated due to the crime. In this case it's a third degree felony, where the monetary total exceeded $1,000 but is under $5,000. A third degree felony has no minimum incarceratory period, by which I mean that your family member could be eligible for probation on this sort of an offense. The maximum possible jail sentence
would be 5 years of jail. There could also be a fine of up to $5,000.
If this is your family member's first felony contact with the law, there is a good likelihood that he will be offered a deal which would give him probation. If he is not eligible for probation because of prior offenses, then prison may be a real possibility, but how much of it the prosecutor would request will depend on his criminal
history as well as the facts and circumstances of the present case. As indicated, the worst case scenario would be 5 years of prison.
If what he wants to do is negotiate a deal that will keep him out of jail and he is eligible for a public defender, public defenders are normally very quick to size up the worth and the weight of a case and have much experience with plea bargaining. If he wants to fight the charges, public defenders, like private lawyers, come in all kinds: good, bad, or average. You might consider using the money you'd spend on a lawyer to bail him out of jail, and stick with the public defender for a while. Many are excellent attorneys and he may have drawn a good one. If he doesn't get on with his attorney you can always replace the attorney a bit down the road.