A Portal for ArcGIS administrator can configure Living Atlas content for the organization through the Portal UI.
The ArcGIS Python API documentation seems to indicate that you can get access to a resource to manage Living Access content, but no additional documentation is provided.
Quering the resource endpoint yields the following:
portal_admin_manager<SPAN class="punctuation token">.</SPAN>living_atlas
<SPAN class="operator token"><</SPAN>LivingAtlas at https<SPAN class="punctuation token">:</SPAN><SPAN class="operator token">//</SPAN>devweb<SPAN class="punctuation token">.</SPAN>tcgis<SPAN class="punctuation token">.</SPAN>ca<SPAN class="operator token">/</SPAN>portal<SPAN class="operator token">/</SPAN>portaladmin<SPAN class="operator token">/</SPAN>system<SPAN class="operator token">/</SPAN>content<SPAN class="operator token">/</SPAN>livingatlas<SPAN class="operator token">></SPAN><SPAN class="line-numbers-rows"><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN></SPAN>
However, there doesn't appear to be any documentation on consuming this REST endpoint.
Same issue with ArcGIS Online utility services.