Ok, thanks for that additional information.
So a Minor in Possession of Alcohol (MIP) is an offense that is not considered a "minor" offense in that it is neither a felony nor a misdemeanor. What that means is that the offense is not punishable by any jail time.
Rather, the offense is punishable by fine only (minimum of $50 for a first offense). However, a conviction of this type of offense can lead to suspension of a driver's license for a MIP conviction for 90 days.
For these types of "minor" offenses, prosecutors and courts may allow for a pre-trial diversion program. A pre-trial diversion program is essentially a type of probation where if the individual meets certain requirements for the period of probation (i.e., payment of fines, community service, etc), a case will be dismissed. This is good because if a case is dismissed, then there is no formal conviction entered onto someone's criminal background and no license suspension occurs.
These types of deferred prosecution programs are generally reserved for individuals charged with minor offenses and those without a substantial criminal history (including minors as the courts tend to try to avoid convicting a minor as it may have serious ramifications down the road for the minor).
As to the second part of your question, when it comes to "possession" of any type of illegal item, there are two types of possession that can occur. One is actual, physical possession (i.e., physically holding something in or about a person). The second is called "constructive possession." Constructive possession is a legal theory that allows a judge or jury to find someone guilty of possession of an item even though they did not physically possess the item (for instance, if there is a person driving a car and there is a gun under the seat, a court can find that the driver "constructively possessed" the gun).
In matters like this, it is always best to speak to an attorney to handle the case because an attorney is more likely to be successful in negotiating a plea agreement where an individual is given the pre-trial diversion.