You may want to change the event that your 1:1 in Lattice is connected to. To do this, you will need to disconnect your calendar event for that direct report and then reconnect to the new event. To disconnect your calendar, please follow the steps below:
Disconnecting your Calendar
Step 1: People page > My profile > 1:1s
Step 2: Select the 1:1 relationship you'd like to disconnect your calendar from > Settings.
Step 3: Choose Disconnect from calendar event.