Hi Chad,
Thanks for your response and sorry for the delay in replying. I have tried what you suggest (I think!) and also various other combinations of show and hide, all to no avail. The Captcha keeps showing.
For clarification, we would like to edit users' details when they notify us of changes over the telephone or by email. So we go into Manage Users, select the user, and try to do it that way. However, the captcha still shows.
We have tried setting the "Show / Hide" option for the captcha to Show and unticking all roles, and alternatively set the "Show / Hide" option to Hide and then ticked all the roles. The "Hide from Anonymous Users" is unticked. (I must admit to never fully understanding what "Hide / show fields by role" does, and whether it relates to the "Hide question from these roles" question, but we have tried many combinations!)
Still we get the captcha showing, and the validation message appears even though the captcha text has been correctly entered.
Your further help would be appreciated.
Thanks.