Event registration form 2.0:
  1. Log into NetCommunity 
  2. Click Site Explorer > Parts
  3. Click Pencil Icon to edit the event registration form part
  4. Click the Edit link next to the event
  5. Edit the Sold Out Message under Event Display Options 
  6. Save

Event registration form (classic):
  1. Log into NetCommunity 
  2. Click Site Explorer > Parts
  3. Click Pencil Icon to edit the event registration form (classic) part
  4. Edit the text for the Sold Out Label under the Captions section
  5. Save