Once your literature search is complete, you must screen the citations according to your inclusion/exclusion criteria. You will want at least two team members conducting the screening, with a third to act as a tie breaker if necessary.
Typically there are two rounds of screening, first using just the Titles/Abstracts. Then you will access the full text of those remaining and conduct a full text screening.
The screening process must be depicted using the PRISMA Flow Diagram in your final report.