Project roles

Privilege	Public [1]	Guest	Developer	Master	Manager [2]	Admin [2]
Access project contents	✓	✓	✓	✓	✓	✓
See and create issues	✓	✓	✓	✓	✓	✓
See code reviews or multi-repo code reviews	✓	✓	✓	✓	✓	✓
See milestones	✓	✓	✓	✓	✓	✓
See repositories and wikis	✓	✓	✓	✓	✓	✓
Update and delete issues [3]			✓	✓	✓	✓
Manage milestones				✓	✓	✓
Manage code reviews or multi-repo code reviews			✓	✓		✓
Merge code reviews [4]			✓	✓		✓
Write to repositories and wikis			✓	✓		✓
Merge multi-repo code reviews [4]				✓		✓
Write to protected branches				✓		✓
Change project settings					✓	✓
Manage project members [5]					✓	✓
Manage hooks						✓
Manage project bots						✓
Manage repositories						✓

[1] Public projects are visible in project listings to everyone. You can set the visibility in project settings.
[2] Manager and Admin roles are not available for collaborators.
[3] Creator of the issue can also update and delete the issue.
[4] Merging code reviews with a protected destination branch is limited to master and admin roles.
[5] Managers cannot manage admin roles.