If electoral register is created by the EMB, which method is used?

Bhutan, Election Act 2008 [official English translation], accessed 29 October 2018

36. The Election Commission shall have the power to:

(a) Introduce any device or system for the purpose of registration of voters, issue of voter photo identity cards to them, conduct of elections, for counting of votes and declaration of results thereof; […]

56. The Election Commission may designate or appoint one or more persons as Dzongkhag Electoral Registration Officers and Assistant Electoral Registration Officers to assist any Dzongkhag Electoral Officer in the efficient and effective performance of his/her functions. […]

Preparation of Electoral Rolls for Parliamentary Constituencies

105. The Dzongkhag Electoral Registration Officer for the constituency shall, subject to the superintendence, direction and control of the Dzongkhag Electoral Officer and with such assistance as he/she may require from the Department of Civil Registration, prepare Electoral Roll for every Parliamentary/Local Government constituency as prescribed by the Rules made under this Act with reference to the qualifying date.

Election Commission of Bhutan: Guidelines for Registration of Voters and Preparation of Electoral Roll of the Kingdom of Bhutan (2018), accessed 29 October 2018

4.1 The preparation of Electoral Roll for an election shall be guided by the following criteria:

[…]

4.1.3 The Electoral Roll shall be updated up to thirty days before the day of poll as no amendment, inclusion of name, transposition or deletion of any entry in the Electoral Roll shall be made during a period of thirty days before the date of poll for an election.

4.1.4 The Electoral Roll shall take into consideration the changes in the Voters details as evidenced in the civil registry of the Royal Government and as per Chapter 6 of the Election Act.