Do your charge tenant debit as normal and then click on the paper clip at the bottom of the screen. Pick up the Invoice from your desktop and attach.
This will now get send to the tenant
AND it will automatically save to the Property Diary, to be sent out with the owners statements.
PLEASE NOTE: You must go into month end and check your statement options: go through to Statements, click on Options and tick "Include Invoices" then close and Cancel out of the month end.