Yes. In order for a Will to be legally binding in Malaysia, there is a requirement for at least two witnesses (who are not beneficiaries and spouse of your beneficiaries) to witness your signing of the Will and for them to sign the Will too. It must be ensured that at the time of signing of the Will that said witnesses must be legal adults over the age of 18 years old (21 years old in Sabah) and are of sound mind.
The reason that the witnesses are required to sign your Will is a precautionary measure. It is to prevent any doubt that could arise from the Will actually belonging to you as the witnesses can be there to attest to it.
A Will not witnessed is a Will that is not recognized by law despite having your signature on it.
Koha places an importance for you to select your witnesses to your Will. Therefore, under the “Witnesses” section, you can designate up to 2 individuals to validate and confirm your Will validity.