Subtitle Edit multiple lines: how to?

[lollozip]

Hello, this is my first thread. Thanks for let me join the forum.
I searched thru the forum but didn't find a solution.

I am new at Subtitle edit. I am asked to create subtitles in italian from a french film and I have strict parameters to follow.
I have a french card with three lines, appearing at different timecodes (line 1 appears before line 2 and 3, and then they fade away together).
Client asks me to make the italian lines appear one by one, never overlapping. In this way, I do very short lines, but SubtitleEdit says they are too short.

I'd like to create lines in the same way of the french version. Is it possible?

thanks everybody
Lorenzo

[amaipaipai]

Try Aegisub, it won't complain about it.