How do I assign shift key to constrain resizing object proportions?

[Ken Nielsen]

For some reason, Photoshop was removed from my installed applications and I've had to re-install and now have lost all of my customized settings and preferences... It will take time to find and re-assign but will need help also. A big thing is that the shift key no longer holds proportions when re-sizing an object. I've scoured the menus and this is why it will be a daunting task to re-discover the years of work I've put into customizing Photoshop. Is the 'Legacy' choice in preferences maybe what I want. I don't want to upset the apple cart and make things even worse by making wrong choices. I'll start with the simple most annoying and work my way through this... How do I assign the shift key to hold and constrain proportions while I am re-sizing an object on the screen? TIA for. help

[jane-e · Accepted solution]

@Ken Nielsen 

After you press Cmd+T, click the link icon between the width and height controls to toggle between distort and proportional. Then use the Shift key to do the opposite.

Jane

[Ken Nielsen]

Amazing Jane-e, it's that simple... I would have never guessed and have been digging in preferences for years... you saved me from a lot of frustration with your reply. Thank You!

[jane-e]

You're welcome, Ken. After Adobe changed the behavior, they did put it in preferences, but later they added it to the options bar for Free Transform, which is so, so much simpler.

Jane