There's no reason to go to the admin app in order to change authorizations for the current document.
If the agent has sufficient permissions (is the dataspace owner), having a modal form with acl:agentGroup x acl:mode and acl:agent x acl:mode matrixes. Changes to them would issue SPARQL updates for the admin SPARQL endpoint that would create/modify the authorizations.
There's no reason to go to the admin app in order to change authorizations for the current document.
If the agent has sufficient permissions (is the dataspace owner), having a modal form with
acl:agentGroup x acl:modeandacl:agent x acl:modematrixes. Changes to them would issue SPARQL updates for the admin SPARQL endpoint that would create/modify the authorizations.