The Bookmark option is and Add Alert option is

Once you click on the bell icon, you can select the alert interval, choose the group, and set the Entry/Exit type for alert delivery.
Interval: You can set alerts for different intervals such as 15 minutes, 30 minutes, hourly, daily, weekly, monthly, and quarterly.
Group: Choose a stock group, index, portfolio, or watchlist to receive the screener alert.
Type: Set the alert based on a stock’s entry or exit in the screener. After selecting your preference, click ‘Add Alert’ to save it for your screener.

You can bookmark the screener for quick access, follow these steps:
1. Open the screener you wish to bookmark.
2. Click on the Bookmark icon at the top of the screener page, as shown in the image below.
Once bookmarked, you can easily access it from the 'My Bookmarks' section for quick access in the future.