Did you try Crtl+V? That would do it in WinBoard, which of course doesn't necessarily mean it would do it in Arena, but it is pretty much a standard keystroke for 'paste from clipboard' in any application...
Arena paste moves

I had try but it doesn't work.
So except having a pgn to open moves, i don't know how to do to copy paste moves. Very boring to don't have this and surprising in a soft.

Still no answer Teja.
Thanks Escherehcse but this working when you have already a pgn,
I just want to copy-paste texte (a list moves like 1.e4 e5 * without creating a pgn).
It with working with chessbase, schredder but how with arena, please ??

I have arena 3 too.
Are we ok with what we do ?
I select with the mouse the text :
[Result "*"]
1.e4 e5
then i copy (ctrl+c)
then in arena i paste (control + v)

Almost
It's:
[Result "*"]
1.e4 e5
Copy
Then in Arena shift + F6 (and then of course click "Load"), or Menu: Game --> Get PGN from Clipboard as posted above by EscherehcsE

Thanks, it is working but i have to cancel first " the shift+f6 " window then open again this window to be able to paste....well, not important it is nice like this.
Thanks you very much all three for these posts.

You don't need a pgn file. Just copy the moves and press Shift + F6. (And then of course, Load.) You can add a header if you want, but you don't need one.

Yes, thanks i have understand now.
My mistake was to copy the text with ctrl+c and not right click mouse. Arena doesn't recognize the short cut with text (with pgn is it ok).

I'm using Arena 3.0 but I can't highlight more than 1 move and if I right click there is no option to copy.
I'd really like to be able to copy and paste the text of analysis lines at the bottom for some of the puzzles I add to tactics trainer. Can anybody help please?

I've experienced the same problem listed above. Before any copy/paste, just click the "Edit" button (Arena 3.5).

Someone said, "Menu: Game --> Get PGN from Clipboard (or Shift + F6)"
This worked for me. I copied a pgn I got from chess.com & then opened Arena, hit Shift + F6 and viola... there it was.
[Event "Vs. Computer"]
[Site "Chess.com"]
[Date "2023-10-21"]
[White "Francis"]
[Black "wochuify"]
[Result "1-0"]
[TimeControl "-"]
[Termination "Francis won by resignation"]
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. Bxc6+ bxc6 6. d4 Bg4 7. dxe5 Bxf3 8.
Qxf3 dxe5 9. O-O f6 10. Rd1 Bd6 11. Nc3 Ne7 12. a4 O-O 13. Be3 Rb8 14. b3 Ng6
15. Qe2 Nf4 16. Qxa6 Qd7 17. Bxf4 exf4 18. Qc4+ Kh8 19. Qe2 Rfe8 20. Rd3 f5 21.
Qf3 fxe4 22. Nxe4 Qe7 23. a5 Qxe4 24. Qxe4 Rxe4 25. a6 Ra8 26. Kf1 Be5 27. c3
Kg8 28. Ra5 Kf7 29. f3 Re3 30. Rxe3 fxe3 31. Rxe5 Rxa6 32. Rxe3 Ra3 33. b4 Ra1+
34. Kf2 Ra2+ 35. Re2 Rxe2+ 36. Kxe2 Ke6 37. c4 Kd6 38. Ke3 Ke5 39. h4 Kd6 40.
Kd4 Ke6 41. Kc5 Kd7 42. g4 Kc8 43. Kxc6 Kd8 44. f4 1-0
Hello,
Does someone know how to paste moves in arena please ?
for example :
1.e4 e5 2.Nf3 *