Place the still images in the Video track, highlight them all and select Slideshow.
There is no need to place images in title designer unless it is specifically for a Title effect.
Video screen capture results would depend upon the selection made with the capture software - sorry no advice given on that here.
Use a color board in the Video track if you want to place images in the Pip track and overlay them. the same would apply to a title.
It is the media file which determine the length (end of a project) of the video and not the end position of a title.
A jumble of answers for you to work through.
Dafydd
[Moderator]