Change of name approval: companies must obtain government consent before altering the 'Private' designation during conversion. Change of name arising from conversion between private and public status requires prior government approval; deletion or insertion of the word 'Private' is a change of name and, without such approval under section 21, the Registrar cannot amend the certificate of incorporation, register of companies, or memorandum of association under section 23. Companies converting from private to public should submit the name approval application to the Government when issuing shareholder notice to minimise delay.