Typically, Form 1099 composite from a brokerage will have sections to report for interest income (Form 1099-INT), dividend income (Form 1099-DIV), and possibly stock sales (Form 1099-B). You would take each of those sections one at a time and enter the appropriate information.
Be aware that this part of TurboTax does look quite a bit different for the 2024 tax return than it did in the past.
The following TurboTax help articles will give you some further guidance:
Where do I enter Form 1099-INT?
Where do I enter my 1099-DIV in TurboTax Online?
Where do I enter investment sales?