As a Manager, you have the ability to turn on or off 1:1s for your direct reports.
To do this:
Step 1: Navigate to the "Your Team" Panel found in the top navigation bar
Step 2: Find the direct report you would like to turn 1:1s off for, and click on the ellipses next to their name
Step 3: From the drop-down menu, click "Manage 1:1 settings"
Step 4: Toggle the "On/Off" switch
To learn more about using 1:1s as a manager, click here.