'Add date' to Bookmarks list, & 'Already bookmarked' symbol

Hello,

I am new to Mac and have successfully exported and imported my Bookmarks from Firefox to Safari.

1. In the bookmarks list, there are two columns: Bookmarks and Address. However, I cannot find a 'Date added', as there is in Firefox. Has anyone found a way to add this to the Bookmarks tabs?

2. Firefox has a blue star on the right of the URL to show that this page has already been bookmarked. Is there a similar symbol in Safari?

I use these two helpful tools a lot, but am continuing using Firefox for my Bookmarks as so far I find it easier to use.

With many thanks for your help.