You cannot copy modules from a project into the enterprise global template.}If you want to make the modules available to ...

{You cannot copy modules from a project into the enterprise global template.}If you want to make the modules available to all users of this Project Web App, check out the enterprise global template, and copy them into it. 

If you want to make the modules available for your own use in all projects, open the Visual Basic Editor and drag the module from your project to the modules folder of the Global.mpt file.