question: How do NPOs change their by-laws , if they had to apply for incorporation by Letters Permit , in Canada ?
answer: formal approval by the appropriate government
turker_answer: In Canada , formal approval by the appropriate government is needed for NPOs to change their by-laws if they apply for incorporation by Letters Permit .
rule-based: NPOs change their by-laws , if they had to apply for incorporation by Letters Permit , in Canada by formal approval by the appropriate government .