Auto Format and Pin Scripts features are depricated in Flash CC. However you can raise a request in the following form to bring it back in the future versions Flash Pro
Huh!? They got rid of the "Pin Script" feature!? Why would they get rid of this?
I've just started to use Adobe CC Flash Professional.
and have found that Script-Pin is not ther.
I cannot believe my eyes!
And also this problem had already been reported 2013/07/19.
Why does Adobe leave this problem?
How does everyone manage scripting without Script-Pin function ?
For ActionScript a lot of people use external AS files, and the pin feature isn't needed, the documents stay open in another tab. Where pinning would be useful again is with HTML5 FLAs, where you do a lot of timeline programming. You can use the Actions panel to jump between timeline scripts, but pinning would still be useful.
I keep on requesting that it returns.