Hi Jammy - Welcome to the Atlassian Community!
You can control access to projects through the permission scheme, and more specifically with the Browse Project permission in the scheme associated with that project.
Here is some more guidance: https://confluence.atlassian.com/cloudkb/how-to-restrict-project-access-for-teams-in-jira-cloud-953142266.html
For JSM June Challenge #2, share how your non-technical teams like HR, legal, marketing, finance, and beyond started using Jira Service Management! Tell us: Did they ask to start using it or...
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