Is にする always a voluntary action taken by the speaker (or target person)?


[Source](https://jlptsensei.com/learn-japanese-
grammar/%E3%81%AB%E3%81%99%E3%82%8B-ni-suru-meaning/)

にする is defined as "to decide on" but does it **always** represent a voluntary
action taken by the speaker or are there cases when it is not neccesarily up
to their decision?

For example,

> 私は明日と来週の火曜日を休みにする。

The English translation from the source is "I'm taking work off tomorrow and
next Tuesday." but can it also mean "I have work off tomorrow and next
Tuesday." possibly implying the "work off" or break time period was not
decided by the speaker (perhaps a manager or whatnot).

* * *

Bonus question: How would I say "I'm taking work off tomorrow **until** next
Tuesday."? My guess is 私は明日 **から** 来週の火曜日 **まで** を休みにする。Does that sound right?




> 私は明日と来週の火曜日を休みにする

will always mean "I decided to take tomorrow next Tuesday off."

If you wanted to imply that someone else made that decision, then you would
say

> 私は明日と来週の火曜日が休みになった

