I organized a couple of workshops, as in I was the correspondent person, and I designed the workshop, invited others to co-organize with me, was the lead editor to proceedings etc. But I feel awkward when I say "I organized", as eventually there was a board of organizers.
Should I say "I organized" or "co-organized"? Is there a right way to do this? Is it vain to say I organized? On the other hand, if I am invited to take part in the organizing board, I say "I co-organized" and mostly I also indicate in which board, which responsibilities/tasks/roles I have taken on in an attempt to make it clear that I wasn't the lead organizer.