I may be confused (?!), but wanted to advise that BC Libraries Support team uses Evergreen permissions to allow Sitka library staff with the LSA profile to edit their own open hours and addresses in the server admin org unit interface. They are restricted to those settings, and only LSA is granted that perm(s).
We are currently on 3.5 ,but have allowed this for past versions too. To help confirm what I mean, we document it for our member libraries here if curious http://docs.libraries.coop/sitka/_organizational_units.html
I am also interested in discussing/voting on the other part of this idea, which is noted by Ruth above, regarding split hours and other atypical schedules, so if various aspects of these 2 ideas end up in one idea I am in favour of that too.
Other bug is https://bugs.launchpad.net/evergreen/+bug/1396764
Thanks!