Trailing / basic stop loss

[AliB]

Firstly, I apologise if this is too basic of a question, I'm new to this.

I'm trying to place a trailing stop loss or even a basic stop loss to my open positions.

I only seem to get the guaranteed/ trailing and basic stop loss options in the spread betting platform.

When I click on "Deal" in one of my open positions, I only get a limit order option when I choose "Sell", I get the notification that this order will execute immediately, which I don't want.

I just want to specify the price at which I'd like to exit my position without it triggering immediately.

Thank you!

Best regards

Ali