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When using next-gen projects, since it's more simple than Classic ones, currently it's not possible to create filters for Boards or Backlog.
There is a feature request suggesting the implementation of this ability:
Please, click on vote and watch to receive updates about the feature.
I didn't find any feature specific for "Group by", so feel free to raise one on jira.atlassian.com (project JSWCLOUD) adding more details about why this feature is important for your environment.
Hi, Jira users! Do you use Jira alongside Microsoft Teams? We want to hear how you’ve used the power of Jira Cloud and Microsoft Teams (via the Jira Cloud for Microsoft Teams app) to achieve a team...
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