Can you group projects by Client for example?
How can you do?
Yes, that's what project categories are for. See https://confluence.atlassian.com/adminjiracloud/adding-assigning-and-deleting-project-categories-844500732.html (it's a simple scheme though, you can only put a project in a single category)
Thank you
If you need more complex project group structure, you can use Project Groups for Jira add-on for this
https://marketplace.atlassian.com/apps/1216998/project-groups-for-jira?hosting=server&tab=overview
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