Here are examples of the word/phrase "authorisation" used in a sentence and paraphrased in a sentence...
You must know the password to get authorisation for using that apparatus.
You must know the password to get sanction for utilizing that apparatus.
If you don't have authority, you can't give me authorisation.
If you don't have authority, you can't give me permission.
More people should use their privilege and authorisation to vote.
More people should utilize their privilege and sanction to vote.
Other Examples...