Yes, you can change the following:
Number of seats in a row
Seat Labels
Seat Index (position in the row)
Order of Seats
Seat Spacing
You can also make changes to Areas, Sections, Blocks or Shapes.
NOTE - please consider the following before making any changes:
1. If you'd like to re-order or add seats onto a row, or change seat spacing or labels make sure you click Lock Seat Labels before making any changes:
This is so that seat indexing/number ordering remains the same and existing orders won't be affected.
2. You can only delete items from Venue Plans if they have no sales, prices, discounts or products attached to them.