Zenkit

Adding a field is simple and can be done from any view in Zenkit. The best place to add a field is from the bottom of an open item panel or popup. Scroll to the bottom and click on "Add" then pick "Custom field".

In table view, you can scroll to the far right column and click "Add Field". 

In Kanban view you can add a field by clicking on the aggregation badge and choosing "Create new field" from the dropdown menu.

You can also add a field from the "Field" section of the collection settings by clicking on "Add custom field" at the bottom of the 

Note: This method only lets you add a number, formula or aggregation field type. Once you've chosen what type of field you'd like to add, fill in the field name and add any other information like a field description, labels, or default values, and click "Create" in the top right-hand corner.