Hey, @Jowqui - welcome to the Community 
OCO/Bracket orders are currently available only on the CFD app. When it comes to Stop Limit Orders on the Invest side, they are primarily intended to serve as a protection against market gaps.
This means that you can set two price targets. Once the stop target of the order is reached, it will activate and become pending, then execute if the set limit target price is reached.
We appreciate your feedback and will pass it onwards. Still, adding OCO orders to the Invest side is not among our immediate plans. This was also discussed in the past in the below thread 