There are two ways to create a Will: Holographic (informal) and Formal.
Holographic Will
A holographic Will is a testamentary document* that is:
Completely in the Testator’s (writer of a Will) handwriting; and
Signed by the Testator at the end.
*A testamentary document is a document that is intended to deal with the person’s estate after their death.
Formal Will
A formal Will is a testamentary document that is:
Signed at the end by the Testator and two witnesses