Before doing this you must have permissions to create events on the other persons' Google Calendar and Zoom
Begin creating a new event in Google Calendar
Click the calendar option towards the bottom of the screen (it should have the name of your default calendar, usually your name)
Choose the calendar of the person you wish to schedule the Zoom meeting for
In the video conferencing section click the down-arrow and select Zoom Meeting
Fill in any other details, such as event title, description, and/or guests and then click Save
Note that the meeting host and the calendar are set to the other person. The calendar section should also note that it was created by you.
Watch a quick video of this process (no audio)