[INVEST] Change open position

Hello guys, i just moved from eToro to trading212 and i cant find a way to change my position after oppening it. For example, i bought some stocks without Stop-Loss and now i want to set it. Is there a way to do it without having to close the position and open again?

Thank you.

On the Invest platform, on the App, you tap your open posistion, scroll down to Pending Orders, you can edit or delete them.

On the Web browser, you click on Pending orders (at the bottom next to the open posistions tab) and edit or delete.