Once you have set up a default row in a table or in a view, you have the power to change them. 

To do this, go to the options of the table or view (depending on the default value to be edited), choose Edit default values :

The record of the default row is then displayed, so just edit it:

Do not forget to save.

Priority of default values

Be careful, some columns can also have default values (current date, user ID), and these take precedence over the default values of the table or the view.

Note that the default values of a table apply to all views that do not have default values. In other words, if they exist, the view's defaults override the table's defaults.

Clearing Defaults

To clear the defaults, open them and then delete the record via the icon at the top right.