1.ADMIN CONFIGURATION:
1.Go to settings dropdown and click issues System.
2.After that you will see Permission Schemes left-hand side page bottom.3.Click permission schemes Project roles left-hand side.
3.Click Project roles give name and then click Add Project roles button to follow below image.
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4.And then go to your project settings page below guidance.
Configure a project
To configure a project:
Choose Settings > Projects.
Choose the project you want to configure.
Go to your project and click Project settings.
Click Permissions and you will see top right side Action button click that for edit . To follow below image steps.
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5.Then click Update button.
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6.Add Project role below guidance.
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Finally update that.
and go to your project settings page above guidance.
7.Click People and give permission to your project need people.