Take a look at this post where our current time selection methodology is outlined.
https://community.skuid.com/t/datetime-displaying-minutes-in-both-1-min-5-min-blocks
At this point this is pretty hard coded into Skuid and there is not a simple way to create a custom renderer to extend or adjust this functionality. An area for impromvement for sure.
What time picker interfaces are you using in other systems that you find very intuitive? We are always looking for good models…
