You can use the Import questions option to extract an Excel sheet and import up to 500 questions at once in the Q&A. Be advised to submit the questions in the Vault after the import.
Select the Import questions button on the right corner in the Q&A tab.
Select Download template. Save the file on your computer.
Select the question references and type your questions. There is a maximum of 500 questions per import. Save the file.
Import the file.
Be advised to submit (if you are a Question Submitter) or assign (if you are a Question Drafter) the questions in the Vault after the import. After the import you will find the questions in the Assigned to you tab.