We support:
Assessing the current performance using a single rating scale
Comparing the current and desired performance using a single rating scale
You can customize the rating scale, but you cannot use different rating scales for different questions.
Why we don't support different rating scales
Using the same rating scale, we can give the person receiving feedback a really clear message of where their top areas to improve are:
This clear ranking of which areas to focus on wouldn't be possible if you used two or more different rating scales.