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If you are using Jira Free Plan, you will not be able to edit Jira project permissions, which means you cannot edit the following Time Tracking project permissions for Tempo.
Log Work For Others - work around is to use Tempo Team permissions
Set Billable Hours - work around can be using Tempo Accounts to track billable hours
View All Worklogs - work around is to use Tempo Team permissions
View Issue Hours - no work around
Also, you You can find information about Tempo Project permissions here.
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