I'm trying to enter stock purchase for capital gains/losses. I entered one then clicked add another. When I do, it kicks out the first one I entered. How do I fix this?

It depends. If you are using TurboTax Online/Mobile, you may want to use the following steps to remove any debris unseen in the background.

In this situation, first please try clearing the cookies and cache.   It handles many issues that seem nonsensical on a regular basis with online activity. 

• Close your TurboTax return first.

Watch to be sure you are selecting 'all time' as example.  Do not use selections like 'last hour' for those browsers that give  you options.

• How to clear your cache

If you are using TurboTax Desktop, save your return, then at the top select Online, then Check for updates. 

Once this is complete open your return and try again. Try the steps below to get started when you are ready.

TurboTax Online/Mobile:

1. Select Tax Tools > Tools (may have to scroll down) 

2. Select Topic Search at the top > Type search term > Go

TurboTax Desktop:

1. Search (upper right) > type 1099b    > Click the Jump to... link