Thanks for your comment.
it would not possible for now as mentioned in above Jobin's comment link. it might be possible after plugin 3 framework available.
In ondemadn instance, below link mentioned pluigns are only available:
Does it possible through jira lincese administrator account, download the plugin and upload to jira ondemand instance ?
Later, also, i need to install "https://marketplace.atlassian.com/plugins/com.thed.zephyr.je" zephyr plugin.
ecliptech, zephyr both are paid plugin, i m fine with commercial plugin.
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