Any document that is available in Bp Event or on the hard drive can be sent as an attachment to an internal message. To do this, it must be saved as part of a document package linked to the message.
Go to the Attachments tab and click on New to open a new Document package.
Give the new document package a name.
Click on Add > Files to attach external documents.
The Explorer window of your computer will open. Select the document you want by double-click or by left-click while holding down the Ctrl key for multi-select.
Click on Add > Shared documents or select several packages by left-clicking and Confirm.
Save and close the Attachments tab to return to the internal message itself