User with no staff admin instance can't create appointment

[adamspd]

No description provided.

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (f2428ae) 90.40% compared to head (b46b953) 90.52%.
Report is 4 commits behind head on main.

Files	Patch %	Lines
appointment/tests/test_views.py	97.43%	1 Missing ⚠️
appointment/views_admin.py	94.44%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #67      +/-   ##
==========================================
+ Coverage   90.40%   90.52%   +0.12%     
==========================================
  Files          43       43              
  Lines        4107     4170      +63     
==========================================
+ Hits         3713     3775      +62     
- Misses        394      395       +1     

Flag	Coverage Δ
unittests	90.52% <97.33%> (+0.12%)	⬆️

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