After you enter the first W-2, you click on ADD W-2 and keep going until every 2024 W-2 you have has been entered on the same tax return.
After you enter the first W-2, it will ask you if you have another one to add. Say yes, and then walk through and add the second W-2.
If you are out of the section, then go back to the W-2 section and select Add a W-2.