How can I assign users to multiple projects?

[Russ Back]

Rather than adding a new user individually to each project, how can I assign in bulk?

[RambanamP]

are you speaking about project roles? if yes then you can try with REST API

https://docs.atlassian.com/jira/REST/latest/#d2e2021

if you want add users to group then use this

https://docs.atlassian.com/jira/REST/latest/#d2e2509

[Russ Back]

No, assigning individual users to projects. Via OnDemand, not REST