Yes, you can unlink a Performance from a Price Profile and set specific Bands for that Performance:
1. Via the Performances page:
a) Select the Performances tab on your Event
b) Click Manage on the performance you want to unlink
c) Scroll down and click Edit Capacity
d) Edit the seats/bands as you wish on the new performance-specific Price Profile.
e) This will then un-link it from the original Price Profile. NOTE - This means that any changes on the original Price Profile won't pull through to this Performance
2. Via the Box Office page:
a) Go to the Box Office page and select your Event
b) Scroll down to the pricing legend bottom of the page
c) Change from Add to Basket mode to Reband mode by clicking the price icon
d) Use the price legend and the Paintbrush to add or remove seats.
Learn more - Reband on the Box Office page