G'day at RCGroups Help section,
This may seem a strange request, because I have successfully attached some .jpg photos to a thread recently, by following the very basic instructions received some time ago from one of the learned moderators :
Go 'Advanced' instead of 'Quick Reply' or 'New Reply' - Click 'Manage Options' button in 'Additional Options' and follow instruction in ther Pop-Up Window ...

Although I attempted to repeat the process for a second set of photos, to attach to a post in the same thread, this time around I cannot get them to attach in the usual separate window under where I wish to add some text, before posting it.
FYI, My successful post was Report 2228, in Electric sailplanes / New Glider from HobbyKing - Phoenix 2000, where, as you can see, the photo attachments came out as expected in the 'attached thumbnails' box.
I'm sure I downloaded the photos OK, one at a time, into the Browse Box in the Manage Attachments Window, but have had problems proceeding further this time around. But did not get thge Pop Up Window to complete the attachment process.
I must have missed out on doing something, having got it right in the earlier post.
I'd appreciate a step by step instruction, because I'm still a basically PC illiterate. Straight forward things - no problem, but anything more complex, and I seem to have problems!
As a general compliment, over the years I have found RCGroups an exceedingly helpful area to gain valuable experience.
Thanks David ... Daffy (Little Black Duck)