Hi _ I'm excited to build my first model-driven app, I've looked at videos explaining it, and I have a simple task to practice on. But I'm completely stumped at the second step because I can't add any data to the primary column in any of my tables. I found out by accident that I can add data to another column in the table, just not the first one. When I have added data to another column, the first column auto-populates with a 36 character alphnumeric string! What is this, and how come none of the helpful videos talk about it, (not even Shane Young's "Everything you need to build a model driven Power app" which only came out 2 weeks ago)!
Here I have created a table for Dryer, which will only have 1 column and 2 rows - Dryer 1 or Dryer 2. But I can't add any data.

So maybe I can't have a one-column table, so I created another table called Department, thinking I can have Dryer as a column to pair with department. So I created a new table called Department (plural Departments), and didn't change the default primary column name from "Name" to hopefully generate a table called Departments, with the first column called Name so that I can add another column called Department. But instead, the table is generated and the primary column is called Department and is un-editable.

To prove the point, I add another column called Dryer, and I can see I can add text for this:

...and when I add text you can see the autogenerated string in the primary column...

What is going on?
For now, it is impossible for me to create tables with meaningful names, because if I do that, then the name becomes a field that I can't use... Is this right???
GraemeNZ