the PARTY search feature (if people use it) works.

When you go menu > party search > search: you can change your available classes in the menu and press search again.

Using the PLAYER search menu, you can set yourself to seeking PT so the people who are forming PTs can invite you from that list.

Using both in unison works well, but players have to actually use both.

Maybe SE can fuse the two together to make a super search feature ^^.