Amy Denny and Rose Cullender were tried by the full majesty of English Law.  In England all "witches" were tried as felons under the Statute introduced by James I in 1604 [1 Jas. I cc. xii].  The process for the apprehension and trial of suspected felons was as follows:

[NOTE: Procedures (especially at the Assize) could be quite complex so I have simplified them here]

1. Neighbours suspect that "X" is guilty of a felony. They convey their suspicions to a local Magistrate (Justice of the Peace) who listens to what they have to say - this is referred to as "laying an Information".  The Magistrate then considers the "Information" and decides on a course of action. In reality he has two choices:   
1. He can dismiss the accusations and take no further action. 
2. He can issue a Warrant for the arrest of the suspect.
2. Magistrate issues a warrant for arrest. The Warrant is given to the local constable who places the accused under Arrest pending an "Examination" by the magistrate.
3. Magistrate Examines accused and accusers. At a time and place set by the magistrate, a hearing  (the "examination") takes place at which he listens to all the accusers and the accused.  His Clerk is by law obliged to write down the testimonies of all parties. It is important to remember that the Magistrate does NOT have the power to discharge the accused.  Once he has issued a warrant he must send the accused to the next Assize to stand trial.  
The accused is then either committed to gaol to await the next county assize or could be bound-over to appear at the Assize. 
Likewise all the witnesses enter into a "recognance" and are bound over to appear at the Assize.
4. THE ASSIZE: The Grand Jury Hearing. At the Assize both the accused and their accusers are interviewed in private by the Grand Jury who, often aided by the notes made at the Magistrate's "examination", decide whether the accused should stand trial before the Petty Jury - "the Jury of Life and Death" at the Crown Court - usually presided over by a Judge (or Judges) of the Kings Bench. 
If the Grand Jury decides that the accused has a case to answer then the formal Bill(s) of Indictment are drawn up and passed to the Clerk of the Court.
5. THE ASSIZE: The Trial.   Here the full panoply of the Law comes into force. There is a Jury of 12 men (no women).  In the courtroom are the Judges, Serjeants at Law, all the County Magistrates and lesser officials. There is a Public Gallery - but there is no Council for the Defence. 
  The Clerk reads out the Indictment(s) - always in Latin - and the accused enters a plea of "guilty" or "not guilty".  In turn the witnesses are called and give their "evidence" under oath. Eventually the accused is asked if he/she has anything to say.    They are not permitted to testify under oath nor can they call witnesses in their defence - but the CAN call upon friends to speak for them - needless to say those accused of witchcraft had few friends!  Before sending the Jury out to consider their verdict the Judge would normally ask if the accused had anything they wanted to say.
6. THE ASSIZE: The Verdict.   The Judge would then send the Jury out to consider their verdict.  It was not normal for the Judge to "sum-up" the case for the Jury nor to give them directions.  If the jury found the accused "not guilty" then she/he would be acquitted and discharged.  A "guilty" verdict led to the judge passing sentence.
7. THE ASSIZE: The Sentence Upon the Jury entering a "Guilty" verdict the Judge would pass sentence as laid down in the 1604 Witchcraft Act - although he did have the power to over-turn the verdict and discharge the prisoner.  Appeals against the death sentence were not uncommon and many accused as witches had their sentences commuted to imprisonment - but because of the condition of the gaols this was often simply a death sentence in another form for many of the old women