Overview
Natively, JIRA allows Worklog creation through WORK ON ISSUE Permission.
Minyaa Suite introduces an additional permission to extend this initial permission ... 
This additional Project Permission is evaluated if you have enable Worklog Create Closure in Settings.
How it works
When Minyaa Time is enabled, a Worklog can be created by a user if he has
- the permission to Update the Worklog (EDIT WORLOG Permission),
- And has the permission to Create Old Worklog.
This permission to Create Old Worklog is evaluated in following cases :
- the user has not the Project Administration Permission
- and the WorkableDelay ("Worklog.Create.Delay.In.Days" in Application Properties) is positive.
The condition is evaluated as follow :
- Today is not older than EOM-1M+nD (End Of Last Month + n Days), where n is provided by the WorkableDelay parameter.
The WorkableDelay ("Worklog.Create.Delay.In.Days" in Application Properties) may be modified through the Minyaa Settings page.