Based on same mechanism as Permissions on Worklog https://doc.alkaes.fr/display/ALKMT/Permissions+on+Worklog in Minyaa Time , your workflow may provide more sophisticated permissions https://doc.alkaes.fr/display/ALKMW/Permission+controlled+by+Workflow for Delete or Edit actions.
In previous version of JIRA, it was possible implement an Issue Validation for Edit and Create operation, but with the evolution of In Line Editing and some other, it was no more possible to support this mechanism.
Older versions ...
For previous versions of Minyaa Workflow (Minyaa Suite 3.x), please refer to Minyaa Workflow 3.5.x .