diff --git a/src/main/java/seedu/address/model/person/fields/Field.java b/src/main/java/seedu/address/model/person/fields/Field.java
new file mode 100644
index 00000000000..d4fecdd558d
--- /dev/null
+++ b/src/main/java/seedu/address/model/person/fields/Field.java
@@ -0,0 +1,2 @@
+package seedu.address.model.person.fields;public interface Field {
+}
diff --git a/src/main/java/seedu/address/model/person/Address.java b/src/main/java/seedu/address/model/person/fields/mandatory/Address.java
similarity index 100%
rename from src/main/java/seedu/address/model/person/Address.java
rename to src/main/java/seedu/address/model/person/fields/mandatory/Address.java
diff --git a/src/main/java/seedu/address/model/person/Email.java b/src/main/java/seedu/address/model/person/fields/mandatory/Email.java
similarity index 100%
rename from src/main/java/seedu/address/model/person/Email.java
rename to src/main/java/seedu/address/model/person/fields/mandatory/Email.java
diff --git a/src/main/java/seedu/address/model/person/fields/mandatory/MandatoryField.java b/src/main/java/seedu/address/model/person/fields/mandatory/MandatoryField.java
new file mode 100644
index 00000000000..eee23a7aca6
--- /dev/null
+++ b/src/main/java/seedu/address/model/person/fields/mandatory/MandatoryField.java
@@ -0,0 +1,2 @@
+package seedu.address.model.person.fields.mandatory;public interface MandatoryField {
+}
diff --git a/src/main/java/seedu/address/model/person/Name.java b/src/main/java/seedu/address/model/person/fields/mandatory/Name.java
similarity index 100%
rename from src/main/java/seedu/address/model/person/Name.java
rename to src/main/java/seedu/address/model/person/fields/mandatory/Name.java
diff --git a/src/main/java/seedu/address/model/person/Phone.java b/src/main/java/seedu/address/model/person/fields/mandatory/Phone.java
similarity index 100%
rename from src/main/java/seedu/address/model/person/Phone.java
rename to src/main/java/seedu/address/model/person/fields/mandatory/Phone.java
diff --git a/src/main/java/seedu/address/model/person/fields/optional/OptionalField.java b/src/main/java/seedu/address/model/person/fields/optional/OptionalField.java
new file mode 100644
index 00000000000..50c05a140b5
--- /dev/null
+++ b/src/main/java/seedu/address/model/person/fields/optional/OptionalField.java
@@ -0,0 +1,2 @@
+package seedu.address.model.person.fields.optional;public interface OptionalField {
+}
diff --git a/src/main/java/seedu/address/model/person/fields/optional/Tags.java b/src/main/java/seedu/address/model/person/fields/optional/Tags.java
new file mode 100644
index 00000000000..3c94db5e3f7
--- /dev/null
+++ b/src/main/java/seedu/address/model/person/fields/optional/Tags.java
@@ -0,0 +1,2 @@
+package seedu.address.model.person.fields.optional;public class Tags {
+}