You can create a free-form text as an occurrence copy to make changes to text at different positions in the model all at once.
1. Right-click on the free-form text and on Copy.
2. Right-click in the model background and on Paste or Paste as/Occurrence copy.
3. Click on the position in the model where you want to place the copy of the free-form text.
Now two copies of the free-form text exist.If you change either of these texts, the other free-form text will also be changed.