See Install an App from the Procore Marketplace for instructions on installing the ProcurePro application in your Procore account. You must have company admin permissions to install and application from the Marketplace.
Configuring ProcurePro in Procore
See Create an App Configuration in a Project for instructions on configuring ProcurePro for your Procore project.
Launching ProcurePro in Procore
See Launch an Embedded App in a Project for instructions on launching the ProcurePro embedded experience in your Procore project.