Hello @Pradeep KM
It is indeed as @Nic Brough _Adaptavist_ said before - the BigPicture is an "instance-wide" plugin, meaning that there is no possibility to turn it off for certain Jira projects only.
However, in case you would like to turn off "WBS widget" - this can be managed on the project level. In order to do so, please navigate to "BigPicture Technical Configuration -> Widgets -> WBS Widget", turn off the toggle "Enable WBS in all Jira Projects", and then you can decide in which projects it should be displayed:
I hope this helps.
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