web/admin: add notes for users and groups

[BeryJu]

No description provided.

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[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.04 ⚠️

Comparison is base (4601864) 26.40% compared to head (c762625) 26.36%.

❗ Current head c762625 differs from pull request most recent head 3ad9ea3. Consider uploading reports for the commit 3ad9ea3 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5459      +/-   ##
==========================================
- Coverage   26.40%   26.36%   -0.04%     
==========================================
  Files         508      508              
  Lines       26015    26015              
==========================================
- Hits         6867     6855      -12     
- Misses      19148    19160      +12     

Flag	Coverage Δ
integration	26.36% <ø> (-0.04%)	⬇️

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see 3 files with indirect coverage changes

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