As a developer you can set specific rules for showing or hiding the Komment widgets and buttons. This could be to only let certain users see certain widgets or to make widget display dependent on data selections or date entered in other widgets.
Conditional Show settings are found in the Advanced Settings for each widget:
For the conditional show formula to work correct use "-1" as the value for when the condition is true. E.g. like in the below example where the widget will be visible when "da" is the initials of the user: