A table input field is 1 field which may contain multiple rows and 1 or more columns. The current defined rows and columns are being displayed and can be modified and you can also define new rows.
You can create a new row by clicking on the icon behind the label "New row". Then you get an empty row to fill out:
After filling out the row you can confirm the creation of the new row by clicking on the icon or you can cancel the new row by clicking on the icon
.
In the same way you can modify the existing row by clicking on the icon behind the row or you can delete a current row by clicking on the icon
behind the row.
After you have confirmed a row, this is still not saved in the database. You will still have to click on the database action button "Save" to effectively save the modifications in the database. If you forget this the system will give you a warning, so that you still have the chance to effectively save the changes.