In order to create new image requests for one of your vendors, you will need to change the source of a particular Production, or group of Productions. Because this step will replace the images you produce in house, you can only change the source when all the Productions have not started the Photography step.
There are two places you can access this feature, either at the Product Requests tab or at the Production tab. Both place will require the same steps below:
Select the Production(s) -> Click Actions -> Change Source -> Save.
Once you have selected Change Source you will then be able to change the source to Product Vendor, and define which Vendor should be able to upload images for this Production.
If you have selected multiple Productions from different jobs or different clients, Creative Force will then separate the Productions into segments. You can then define the source for each segment.