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Go to JIRA Administration → Issues → Custom Fields → Add Custom Field and choose STAGIL Required User Work Log.
Type a Name and optional a Description. Press Create.
Configure a STAGIL Required User Work Log field
Go to your custom field and press configure on the right side. Press Edit Default Value.
Now you can set the default hours of work for every day. Please use digital numbers with "dot" or "comma" - it depends on your installed language. You can set the exact value in the issue of your staff.