Making all clips the same length

I have a ton of stills that i want to make into a movie. Is there a way to make them all the same length (5 sec) at one time?

Odd question, the default duration for imported stills in Resolve is already 5 seconds but you can change it to whatever you want under preferences>user>editing.

I noticed that but in manipulating the scenes quite a few have changed size. is there a way to reset them all back without having to start over?