I have searched FM's own help took and this website to no avail. However I may be mistaken and the answer to my question is indeed here somewhere, so I apologize in advance if it is.

What I'm trying to do:

I have a layout that shows multiple portals. I was wondering if there is a script or an automated way to select a particular portal (by user defined criteria) so portal script commands can be executed within it.

You can use Go To Field script step and address one of the fields in portal that you want to run script on.

This has very recently been discussed in great depth

http://fmforums.com/forum/showtopic.php?tid/182332/

ya, I knew it'll be somewhere. I'm not the worst looker for stuff, maybe my search wasn't good enough. Plugged in "multiple portals select portal" etc. but didn't even find it.

Thanks for the help!