せいにする => Blame... N2
Cause, reason
にする => にする N4
ずにすませる => Get something done without doing A N1
Miscellaneous
くする/にする/ようにする => to make something ~, to decide on, to try to; to make sure that ~ N4
くする/にする => To make, to change into N5
Change, cause and effect
~く/ ~にする      => to make something ~ N4
Add meaning
...を...にする => to make something ~ N4
Purpose, target
~ことにする      => to decide on N4
Decision
ことにする => to decide on N4
Determined, determined
ようにみせる => to look; to seem; to appear ~ N4
Consider it
てすみません => I'm sorry for... N4
ことにする => Decide to N4
Causative, Passive, Volitional