Port label tab missing at Function node

I will create Email Alerts & Notifications for events but portlable missing at Function node. I use function node for message class eg. warning, critical, normal.

Hi @muharremsari - not quite sure what you mean. Can you post a screenshot highlighting the problem?

You are showing two screenshots from two different versions of Node-RED and the layout of the edit dialog has changed.

The first screeshot shows the more recent dialog. The port labels options are under the appearance tab in the dialog. Click on this button to switch to that tab:

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Thanks for express answer. Solved.