As a direct report, you can change the time of your next 1:1. To do so, start by click "Plan next 1:1" at the top of your "You" page.
Please note: if your 1:1 is synced with your calendar, you must change the time of your 1:1 within the calendar, which will then update the time in Lattice.
Step 1: When in your 1:1 click "Change time" found at the top right corner of your agenda:
Step 2: Select the new time for your 1:1 and hit "Save Time" in the top right corner.