Go to Administration > Preconstruction > Template > click on Edit on the required Preconstruction template and it will take you to Template item screen

Choose the preconstruction template item in which the RFQ needs to be added and click on Details

RFQ set can be linked through the RFQ Linked Process section on Template Item Details screen

Add the RFQ set through add new and specify a quote operation (Initiate/Distribute/Receive/Accept). Preconstruction task can be completed only AFTER user performs the quote operation specified here. Hit Save