On the Search Page Documents are indicated by the following Icon: 
If there are any documents already available on a Tender or Project Lead, namely Bill of Quantity (BoQ), Site Attendance Register (SI register), Tender Application Forms or Bidders Lists; they will appear under the Documents Tab. Click on document required to download it.
If the Document you are looking for is not available you can request one.
On a Tender you are able to request Documents via Actions.
On a Project you are able to request Documents by email the Researcher via the, “For Assistance, click Here’ link.
Protip: Always check to see what documents are already available, before Requesting a SI Register/ Bidders List or Request BoQ