Hi @katieQEPVL ,
Just to add to what @Chad-Smith said. You need to separate projects as their own and not host all your different client's information in the same project. This is my option will become a security and data protection issue. What if someone accidentally gives someone permission to the wrong folder giving them access to confidential information.
Keep it straightforward by creating a project for each specific project and only host that project information with in.
Please click the Accept Solution button if my reply answers your question.
Twitter: @TheDarkAsset
LinkedIn: gareth-spencer-84202532
Gareth Spencer
BIM Technical Consultant | Man and Machine (UK)