Allow users to see jobs from other users in their group

[stephenlienharrell]

add groups into tacc stats

[nicejunjie]

Sharing across user group is not well defined, as people all have many groups.

Implementing sharing across slurm accounts is possible, but a major rewrite of many things and doesn't fully solve the sharing problem.

The shareable URL on Frontera is a more practical approach, at least in near and midterm.

[stephenlienharrell]

Create a search for allocations.