In photos I place the images in an order, but the system never saves the order and shuffles the order. What can I do to keep the photos to show in the order I would like to keep them in?

I assume you are talking about in an album - since you cannot change the order in the all photos view at all.

In an album, you can sort by date (ascending or descending) or by title. You can drag and drop into a specific order, but as you have found, it is not very sticky. If anything causes the album to resort, then it will go back to whatever is defined as the sort order for that album.

The best (and only real) solution if you want a specific order is to give the images titles with a numeric prefix. The titles are sorted alphabetically, not numerically, so in order for the title sort to work correctly you have to have enough leading 0's for all the images in the album to have an alphabetic order - so if you are never going to have more than 1000 images in the album, you can get away with 3 digits. EG:

(Note, in all the examples, you could have anything you wanted after the prefix - eg 00001 Jenny, 00002 Rome etc)

000

001

002

003

...

997

998

999

However, if you then went over 1000, it would then fail to sort properly and you'd need to manually add another leading 0 to all images. So if I were doing this, I'd add an extra couple of leading 0's above what I thought I needed. EG:

00000

00001

00002

...

00997

00998

00999

Then if you unexpectedly needed to go up to a larger number you'd have no problem.

01000

You could even choose to go up in steps of 10 rather than 1 which would allow you to insert images into the sequence between two other images later - which would require a complete renumber of all later images without the space included from the start:

00000

00010

00020

00030

...

09970

09980

09990

But if you do this, you need to consider whether you need another leading 0.

One needs to rename the photos with a sequential number at the end of the file name so the alphanumerical sorting by the Finder will display them in the order you want.

Group the photos in an album in your chosen order.  Then rename them by one of these methods:

1  - use the Photo ➙ Batch Change ➙ Title to Text with the option to add a sequential no. at the end. The export to a folder on the Desktop via File ➙ Export ➙ File Export  with File Name = Title.

2 - export from the album File ➙ Export ➙ File Export  with File Name = Album Name with number.

3 - export from the album via File ➙ Export ➙ File Export  with File Name = Sequential and enter the Prefix for sequential.

All of these methods will give you files that can be listed in the order you want when sorted alphabetically in the Finder.

Point 3 - Yes, as in the examples I give above

00001 jenny

00002 rome

etc.

This info in this thread is most fundamental to my use of Photos since Aperature went away.

re point 1, i have the same question

re point 2, Album Name would give them all the same name

re: point 3, I assume Prefix means number goes in front of title?

Surely if you put the number at the end, then sort by name will still sort by the first letters of the filename first, and will only sort by the number if the rest of the name is the same?