How do you enter repeat text left or right

In the complex Volta example there are examples of repeat text in bars 3 and 8. Both of these have Text style Repeat text right.

If I select one and move it I can see it is anchored to the bar line at the start of the bar.

I have tried adding both System text and Stave text and changing the Text style to Repeat text right, but they are still anchored to a note head.

I have tried the manual, but cannot find it described, so how can repeat text be added that is anchored to a bar line?