Natively, JIRA allows Worklog creation through WORK ON ISSUE Permission.
Minyaa Suite introduces an additional permission to extend this initial permission ... 
When Minyaa Time is enabled, a Worklog can be created by a user if he has
This permission to Create Old Worklog is evaluated in following cases :
The condition is evaluated as follow :
The WorkableDelay ("Worklog.Create.Delay.In.Days" in Application Properties) may be modified through the Minyaa Settings page.