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Name your gadget meaningfully, so everyone knows at a glance what it is about and when to use it. Fill out the rest of the fields as applicable, namely:
The datasource, where the Confluence instance is installed.The space where the tasks are located text, just write, format and arrange your content.
Finally, indicate if you want to use the current settings for all the compatible gadgets in the dashboard. This option eases the pain of configuring one by one the rest of the gadgets with the same default configuration
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