Method 1 -- Working in your PWE

You can set up Make Support in your PWE and then locally build the targets of your project.
Advantage
You would use SNiFF+'s team support as it is intended to be used:
Procedure

Check out files that you want to modify in your PWE--Setting up Make Support for a project means setting the project's Make attributes. These attributes, like all other project attributes, are stored in the project's PDF. As part of the shared project setup process, you should check in PDFs along with your other files, so you need to check them out before modifying them.
Set up Make Support for the shared project in your PWE.
Test the modifications by building the targets of your project in your PWE.
If the build is successful, check in the modified PDFs. If the build is unsuccessful, correct any mistakes in your Make attributes and then rebuild the targets.
Update your team's SSWE and SOWE. By updating the SSWE, your changes will be available to the rest of your team. By updating the SOWE, the targets of your project will be successfully build in it.