To submit an order, you'll first need to find a security you'd like to purchase. Tap the magnifying glass icon in the top right corner of your dashboard. You'll then be able to search for the security you'd like to buy (you can search by company name or symbol). Once you find the security, tap it to select and you'll be brought to a stats overview and information page.
Click the "Buy" button at the bottom of the screen and fill out the order prompts.
You can select the order type at the top of the screen (tap to adjust between Market and Limit buys), see the security's price above the keypad, and use the keypad to enter the limit price (if applicable) and quantity desired. Once satisfied, tap "Review Order" to see the complete details and confirm the order to submit.
To view a full list of what type of assets we support check out this article!