To load ExtJS on each page of your server:
- Go to Admin > Site > Site Console > click Site Settings.
- Scroll down to Customize LabKey system properties.
- Two checkboxes, for two different libraries, are available:
- Require ExtJS v3.4.1 be loaded on each page
- Require ExtJS v3.x based Client API be loaded on each page
Note that it is your responsibility to obtain an ExtJS license, if your project does not meet the open source criteria set out by ExtJS. See Licensing for the ExtJS API