Re the naming sequences of media, there's a great free utility called Bulk Rename Utility - https://www.bulkrenameutility.co.uk/ - which allows for an imported group of media to be renamed as you choose and for those media events to be sequenced; e.g. xxxxxx001, xxxxxx002, xxxxxx003.

My AX100 camera, keeps numbering in sequence with stills on changing to a new memory card, but it doesn't with video, so each memory card used on the camera begins back at xxxxxx000. Ten memory cards used means I've got ten identically named video files. I have long used BRU to rename the media, one memory card at a time, so that the whole project's video files are named sequentially from xxxxxx0000 to xxxxxx3000 (or whatever the final number is). I do this just after transferring the video files from the memory cards to the computer - and before starting any work on the project in Vegas Pro.

The only downside is that BRU, being very flexible in its naming options and functions, is not all that easy to use and does take a while to get the naming and numbering the way you want it.

If the dates/times are correct on your cameras, for next time, you are able to select a Details view within the Project Media window, and from there you can sort by last Modified, and of course from there you can drag/drop the mass onto your video track. On the left column when in details view it will even give your media a sequence number. The sad part about this is that if you've edited any of the images, the last modified date will put it out of order, and there isn't an option to sort by "Date Created" or "Date Taken". :(

I have no solution on how to add a transition to multiple overlays, or an easy way to overlay hundreds of photos. :(

Insert/Slide Show/ Add pictures/ create, inputs into the time-line and gives all slides an automatic different transition. Anyone know if there is away to add the transitions to slides already in the timeline If not, ah well. I am renumbering each particular slide from each camera to its nearest in the folder. 540 from each camera. Was a great holiday

Photo Mechanic is the mainstay of pro shooters for file-renaming files also. Several templates available for auto-numbered filenames.

It was asked before and as far as I can recall VMS can't apply a transition "to multiple points" (my other NLE Corel VS, can do so for ages

A transition in VMS can be dragged at an overlapping part of two events. Also a transition can be dragged at multiple overlapping points of a range of selected events in one action. In that case the transition must be dragged at an overlapping part of two events of the selected range:

Well that's just fantastic.

3POINT. That means the same transition is set for the selected event. I liked the assorted transitions in the slide show.

Just spent the day checking the dates of pictures of the two camera. Picture on camera 1 (imag111) title was copied, Camera 2, pictures of the same date were renamed as camera 1s title (imag111 a,b,c etc). All media files are now in correct viewing order for the time line. Slide show is done. Phew! Been good practice.

Thank you everyone for your help and advice

Roo