Once the widget is linked with the field, you will see a picker for time selection. Note that the picker will be in 24 hours format.
Time picker widget that can be used with character type fields in Odoo using the jQuery plugin 'Wickedpicker'.
After installation, go to the field definition in the view and add "widget='timepicker'".
Once the widget is linked with the field, you will see a picker for time selection. Note that the picker will be in 24 hours format.
