How to manage the materials for a research project

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On Monday, I researched mathematical problems and I opened a section of papers and monographs.

On Tuesday, I continued my research on mathematical problems and I opened some new papers and monographs.

How can I create a group where I can add and delete entries so that I don’t have to search my own database repeatedly each time?

Then I can also set up biology research projects and put literature I’ve read before into a group.

How do I do this, please?

now，i know “workspaces”，Can solve my problem

thanks ！