Hi Anny,

If you want to have a checkbox whose value is controlled by the value stored in the underlying database, and to have it automatically save changes as the user click/unclicks it, you will need to do something like what you'll find in our source code at:

server/modules/experiment/src/org/labkey/experiment/controllers/exp/ExperimentMembershipDisplayColumnFactory.java

If you haven't already grabbed the LabKey Server source code, you can find it here:

https://www.labkey.org/wiki/home/Documentation/page.view?name=sourceCode

or check out directly from Subversion using the information here:

https://www.labkey.org/wiki/home/Documentation/page.view?name=svn

If you just want a checkbox that allows you to select data rows like you can for many of the built-in tables, you may be able to accomplish this using a LABKEY.QueryWebPart and setting showRecordSelectors to true.

https://www.labkey.org/download/clientapi_docs/javascript-api/symbols/LABKEY.QueryWebPart.html#constructor

Thanks,
Josh