How do I customize the permissions for a specific project task in a subsite in SharePoint?

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1. Navigate to the subsite containing the project task.
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2. Select the item or folder you want to customize the permissions for.
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3. On the Ribbon, click the 'Share' button.
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4. Choose 'Advanced'.
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5. To grant users permissions, select the user name and select the relevant permission level.
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6. To revoke users permission, select the username and click 'remove user'.
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7. To save the changes, click 'Ok'.