Leslie Costello has been handling a case for Mrs. Lister regarding her daughter's high school enrollment application. The matter has been concluded and a Tax Invoice has been sent to the client. Mrs. Lister has called to discuss the cost of the Tax Invoice, which she believes is too costly for writing a few letters. Leslie Costello has provided various services, including drafting a Tax Invoice, drafting letters, drafting confirmations, composing and executing letters, typing letters, and holding conferences. Disbursements subject to GST include printing charges, GST on disbursements, and holding in trust. The Cost Agreement details rates for Leslie Costello at $450/hour and Shayna Ward at $150/hour, with GST charged at 10%. Once the Tax Invoice is drafted, Leslie Costello will be contacted for approval and sign off. 3. Outline the requirements around storing documents associated with Mrs Lister's matter now that it has closed. In your answer refer to the Policy and Procedures Manual and Legal Profession Uniform Law Australian Solicitors' Conduct Rules 2015 rule 14 Client documents