Wikimedia Bugzilla is closed!

The local community is conducting an outreach event in Delhi on March 22nd.
This will include an intro Wikipedia, an editing workshop and hands-on basic
editing. 
(http://wiki.wikimedia.in/Wiki_Academy/Netaji_Subhash_Engineering_College)  

We are expecting about 40-60 people to attend.  One of the things we'd like to
do is encourage potential newbie participants to create their own usernames
during the session and learn editing by trying something similar there and
then.  

Is there a way of removing the 7 username in a 6 hour period for the following
IP address for 14.139.61.113 for the duration of the workshop (Mar 22nd
between 0830 - 1430 UTC.)

(Workshop is for 3 hours but I'm requesting 6 hours just in case we are over
time or someone stays back to edit.