I have been saying this for a year, The should have a system where you can make a priority list of you friends (like officers in a guild) who are essential admins that can perform certain extra tasks :
Stop/Start Buildings so if you need something stopped like a gold mine or rebuilt they can do it
Sending Geo's out
AND begin able to add a book to the book binder and add a glue.
the only solution is to give someone your password so they can essentially log on for you which isn't the best idea, even if you know that person very well.