This plugin is outdated and might not be supported anymore
Two Column Admin

Two Column Admin

Details
View on WordPress

Provides the ability to select from the classic 1 or 2 column setup on your dashboard in wp-admin. There are no settings, simply install, activate, and then use “Screen Settings” in the main dashboard view to select one or two columns.

Details

Plugin code:
two-column-admin
Plugin version:
1.1
Outdated:
Yes
WP version:
3.8 or higher
PHP version:
or higher
Test up to WP version:
3.7.41
Total installations:
100
Last updated:
2014-02-24
Rating:
Times rated:
5
admin
columns