In Bamboo 5.2 and above, it is possible to add a link to help documentation for your task, which displays in the top right corner of the task edit window.
In your add the following line between the elements:
<help link="myplugin.task.help.link" title="myplugin.task.help.title" />
In your internationalisation properties file, add the following (replace the dummy data with your own):
myplugin.task.help.link = http://task.documentation.com myplugin.task.help.title = How to use my task!
If you do not already have a internationalisation properties file, simply create one in called and register it in the
<resource type="i18n" name="i18n" location="com.my.plugin.package.i18n"/>
These are only example identifiers, please change "myplugin.task.help.link/title" to match your plugin, as it must be unique.