...
Update user
URL /scim/users/{id} PATCH
Select users
URL /scim/users GET
Select user
URL /scim/users/{id} GET
(filter and attributes needs to be supported)
Delete user
URL /scim/users/{id} DELETE
Create group
URL /scim/groups POST
Assign Member
URL /scim/groups/{id} PATCH
Remove Member
URL /scim/groups/{id} PATCH
(core one assumes there is .groups property)
...