Adding to table

I am working on a simple app designed to give a French to English translation of terms used in my business.
I am just displaying as a list in alphabetical order - very simple!
What I want to do is to allow users (or me) to add a new French word and the English translation
I have a separate tab with a simple data entry and there I am stuck… how do I get it to add a new line in the data sheet?
All it does is to bring up the first line in the table and I can edit it but not add a new line…
Please see the link below and I have enabled share…


For simplicity, I would recommend enabling the Add function or a Form button. Either one will allow you to add new rows.