Does primaryParty imply actAs? actAs imply readAs?

When assigning rights to Canton Users, does setting the primaryParty imply the actAs and readAs rights? Does granting the actAs right imply the readAs right?

No, setting the primaryParty does not grant rights. See Example when Canton User's primaryParty makes a difference? .

Yes, granting the actAs right to a party implies the readAs right for that party.