The early releases of the new software for 2023 are known to be preliminary and incomplete. It will be refined by numerous updates over the next couple of months before it is really ready to use. The investment income section is not ready yet. Try again in a few weeks.
When the investment income section is ready, you still cannot create a Form 8949 directly in forms mode. It is created when you enter an investment sale. It's best to do that in the Step-by-Step interview.