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I am going to assume that your PO told you to ask the Court for permission.
The permission is requested via a formal motion the Court. It can be called a Motion to Modify Probation, or more aptly, a Motion Requesting Permission for Travel.
The motion may be filed with the court, and both the prosecutor and the PO have to get a copy as well, and, notice of the date/time for the hearing.
At the hearing, the Defendant explains their situation and the Court will allow the prosecutor and the PO to weigh in. Then, the Judge makes a decision. An attorney is highly recommended to do this for you.
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