This official news post is copied verbatim from the WoTMUD website. It is copyrighted by wotmud.org.
If you are switching to another character same race, you must wait five (5) minutes between renting that character and logging in a different one.
If you are switching to another character cross-race, you must wait thirty (30) minutes between renting that character and logging on a different one.
Going linkless and logging in another character is considered multiplaying. Don't do it.
Vivienne