[1] As of 29 July 2019, the Order has three different grades:[2] The rules of award state that no more than 12 people (other than people admitted in an honorary capacity) may be admitted to the Order of Temasek (With High Distinction - previously known as First Class) at any one time.

The Order would have only twelve members, with Yang di-Pertuan Negara conferring the membership on advice from the Prime Minister.

Any warrants issued by order would be countersigned by both Chancellor and the Yang di-Pertuan Negara.

Members of First Class grade would have their Badge worn the right hip from a sash passing over the left shoulder and under the right arm, and their Star worn on the left side of their outer garment.

Members of Third Class grade would only have the Badge of the Order, and it is to be worn suspended round the neck from a ribbon.