Access using the menu bar File > Preferences > TradeStation Order Entry menu sequence and select Options > Triggers.TradeStation Help
Use the Options - Triggers dialog to specify the type of tick, number, and pattern of ticks that will trigger the stop or if touched condition. Bid/Ask and Ask/Bid triggers use the order type (Buy/Cover or Sell/Short) to determine which type of tick to compare. Double tick refers to two consecutive ticks, and Twice refers to two non-consecutive ticks in the same day.
Access using the menu bar File > Preferences > TradeStation Order Entry menu sequence and select Options > Triggers.
Stop/If Touched Trigger Types 
Controls the default settings for trigger types for single legged options.
Stop trigger types only apply to single legged option stop orders. These trigger types do not apply to multi-legged option stop orders.
The following provides a description of each trigger type:
| Type | Description |
|---|---|
| Single Trade Tick (STT) | One trade tick must print within your stop price to trigger your stop. |
| Single Trade Tick within NBBO (STTN) | One trade tick within the National Best Bid or Offer must print within your stop price to trigger your stop. |
| Single Bid/Ask Tick (SBA) | Buy/Cover Orders: One Ask tick must print within your stop price to trigger your stop. |
| Single Ask/Bid Tick (SAB) | Buy/Cover Orders: One Bid tick must print within your stop price to trigger your stop. |
| Double Trade Tick (DTT) | Two consecutive trade ticks must print within your stop price to trigger your stop. |
| Double Trade Tick within NBBO (DTTN) | Two consecutive trade ticks within the National Best Bid or Offer must print within your stop price to trigger your stop. |
| Double Bid/Ask Tick (DBA) | Buy/Cover Orders: Two consecutive Ask ticks must print within your stop price to trigger your stop. |
| Double Ask/Bid Tick (DAB) | Buy/Cover Orders: Two consecutive Bid ticks must print within your stop price to trigger your stop. |
| Twice Trade Tick (TTT) | Two trade ticks must print within your stop price to trigger your stop. |
| Twice Trade Tick (TTTN) | Two trade ticks within the National Best Bid or Offer must print within your stop price to trigger your stop. |
| Twice Bid/Ask Tick (TBA) | Buy/Cover Orders: Two Ask ticks must print within your stop price to trigger your stop. |
| Twice Ask/Bid Tick (TAB) | Buy/Cover Orders: Two Bid ticks must print within your stop price to trigger your stop. |
Click OK to apply changes or Cancel to exit without changes.