In Hogwarts Legacy, you will find Demiguise statues holding a moon-shaped ball. After completing the main story quest, The Caretaker's Lunar Lament, you can collect these moon-shaped balls. During the quest, you will meet Gladwin Moon, who teaches you the unlocking charm, Alohomora.

This unlocking charm can be used to access areas that are otherwise locked. The first Alohomora you get will open level one locks. However, some locked doors require levels two and three. To upgrade your Alohomora charm to levels two and three, you must bring 9 and 13 Demiguise statues to Gladwin Moon, respectively.
You will find a total of 30 Demiguise statues scattered in Hogwarts, Hogsmeade, and Highlands. While collecting the Demiguise statues, we've collected the most easily accessible Demisguise statues first, so that you can upgrade your Alohomora charm as soon as possible. This will allow you to avoid unnecessary obstacles of not having level two or level three Alohomora charm when needed.
Whenever you have nine Demiguise statue moons, return to Gladwin Moon and give the statue moons to him to get your first upgrade. Continue collecting again, and as soon as you have at least 13, return those to Gladwin Moon to get the third and final upgrade of Alohomora. You can always go to Hogsmeade or the Highlands to collect the Demiguise statues that are easily accessible, out in the open or locked behind a level one lock to return them to Gladwin Moon and upgrade your Alohomora before collecting the ones locked behind level two and three. Just remember to mark them down.
You can only collect the Demiguise statues at night time. So always make sure to change the time of day to night before you start hunting them. You can easily do so by going to your map and waiting by pressing the right analog stick or the 'F' key on your keyboard.
There are 10 Demiguise statues in Hogwarts, nine Demiguise statues in Hogsmeade, and 11 Demiguise statues in the Highlands. Collecting them as early possible is a good practice as you will come across a lot of areas that may require different levels of Alohomora spell to access loot locked behind doors.
Important: Before we get into the locations, learning how navigation works in Hogwarts Legacy is also important. Hogwarts has several wings and main locations with a 'Flag' icon.
When you click on these 'Flags,' it will show Floo Flames (fast travel points) to different locations within those main wings and areas. For instance, if the guide tells you to go to the Defence Against the Dark Arts classroom in the Astronomy Wing. You must zoom into the Astronomy Wing flag and select the Defence Against the Dark Arts classroom floo flame fast travel point.
You can also see the list of all areas and floo flames on the left side of the map, which you can easily click on to navigate to that area.
Hogwarts
Professor Fig’s Classroom
First, go to Professor Fig's Classroom floo flame point in the Astronomy Wing.
As soon as you load in, you will see the classroom directly ahead of you.
Head inside and you will see his office at the end of the classroom.
Go inside the office, and you will find the Demiguise statue on a small table by the fireplace.
Muggles Studies Classroom
To get to the statue which is in the Muggles Studies Classroom, you need to first fast travel to the Transfiguration Classroom floo flame in the Asronomy Wing.
Turn around and you will notice a huge door to your left. Go through the door.
When you go through the door, you will notice a large set of stairs to your right. Go downstairs.
At the very bottom, you will find a small door.
Go through the door and keep going downstairs until you see a dragon statue.
From here, turn right and continue moving forward. You will find a level one locked door to your left.
Use Alohomora to unlock the door and find the Demiguise statue inside the room.
Hogwarts North Exit
Next, fast travel to Hogwarts North Exit floo flame in the Bell Tower Wing.
Turn around and go left after entering the castle walls. You will notice a small set of stairs going up to a small tower but with a small door beside it.
The door has a level one lock on it. Use Alohomora to unlock it and enter.
Enter the room and you will find a Demiguise directly in front of you on a crate.
Divination Classroom
Fast travel to the Divination Classroom floo flame in the Library Annex.
Go upstairs, and you will come across a ladder that automatically falls for you to go to the classroom.
When you reach the classroom, you will find the Demiguise statue to your right.
Restricted Section
Fast travel to the Library floo flame in the Library Annex.
When you fast travel to the floo flame, turn around, and you will see a fenced area in the distance.
Go through the door and you will find some stairs that take you to the lower level of the restricted area.
Keep going down and forward through several rooms.
Once at the bottom, keep going forward, and you will eventually come across the Demiguise statue in a small corridor.
The Great Hall
Go to the Great Hall floo flame in the Great Hall.
Straight ahead, you will notice a room to your right.
Enter the office after unlocking and you will find the Demiguise directly ahead of you on a small table.
South Wing Bathroom
The Demiguise is in a secret locked room inside of a locked bathroom in the South Wing. First, fast travel to the Faculty Tower in the South Wing.
From here, go straight ahead until you see some stairs that take you downstairs.
Go downstairs and go through the corridor with different musical paintings.
When you reach the end, turn right and go down a small set of stairs and continue going left.
After turning left, you will find two doors. The second door to your left will be locked with a level one lock.
Unlock it using the Alohomora, and enter. Go inside the middle stall.
There will be a secret room behind the stall with the Demiguise statue in it.
Gargoyle Room
For this Demiguise fast travel to the Transfiguration Courtyard floo flame in the Astronomy Wing.
When you get there, look behind you to find a large door that takes you to the Defence Against the Dark Arts tower.
When you get inside, you will find a level two locked door to your right.
Unlock the door using your Alohomora spell and enter. You will find the Demiguise statue inside.
Professor Howin’s Office
The next one is inside Professor Howin's office. For this, fast travel to the Beasts Classroom floo flame in the Bell Tower Wing.
Enter Professor Howin's office, which is directly next to the floo flame.
You will find the Demiguise statue on a small round table deeper into her office next to the bed.
Storage Room
Fast travel to Potions Classroom floo flame in the Library Annex.
Go through a double door ahead of you after fast traveling.
After you go through the door, you will find a spiral staircase going downstairs to your left.
Continue going through the corridor until you come across a level one locked door to your left. Open it and continue.
Continue running down the hallway until you see another locked door, but this time a level two locked door to your left.
Open the locked door and enter the storage room to find a Demiguise directly in front of you.