I'm happy to see again here in the Community, @grishsavla.
I got you covered in recording the investment that was made in Fixed Deposit from a Bank Account. This process is just a breeze.
Let's start by creating an equity account. This way, you be able to have the right account to be selected upon recording the deposit.
To do that:
After that, we're now ready to deposit the investment. Just select the equity account from the drop-down arrow on the deposit page.
I'll guide you on how to get there:
I'd also like to share this article with you, which provides more details about handling investments to your business using QuickBooks Online: Learn how to record capital investments to track money going into your business.
Know that you can always get back to me here should you need anything else. I'll be around to assist you. Have a lovely day!