It has been decided that (something) will happen
This expression indicates that a decision has been made regarding a certain action or situation.
Examples
来週、職員が増えることになっています。
It has been decided that more staff will be added next week.
明日、会議があることになっています。
It has been decided that there will be a meeting tomorrow.
毎日、掃除をすることになっています。
It has been decided that we will clean every day.
Quick check
毎日、掃除を___ことになっています。