Hello @AlyssaTrainor the simplest way to tag objects in Workfront is to use a custom field on a form. You can name the field the tag "Tag | ABC Projects" the only choice being a "☑". Place this custom form on all objects in question and mark "☑" is project meets criteria. This will allow for you to pull the projects that are tagged into a single report view for example.
When you say pull the information from a project into a different location....are you talking about moving the data or copying the data to another project?