One-to-ones need to happen regularly: weekly to monthly is best. By connecting your one-to-ones in Saberr to your calendar you'll be ready every time.
Then in Saberr, find your colleague in the People tab.
Click "Connect calendar event", and find the right event. Saberr will try to suggest to find the most likely events, but you can see every recurring event you have coming up.
Once connected to a recurring event, Saberr will always show you your upcoming meetings in the Home tab. You'll also get timely reminders about setting and reviewing your agenda, in advance of each meeting.
Log in to Saberr
The Small Print
You'll need to have your calendar connected to Saberr. If that's not the case, just Login to Saberr again using your calendar and you'll be all set.
Note that you and your colleague "co-own" your one-to-ones in Saberr. Either of you can change the event it's linked to. It's a case of "whoever touched it last".
When finding your event, you'll see events with more than just you two in - we know sometimes you'll have PAs involved, or invite your whole team to the same meeting to do lots of paired one-to-ones.
If you happen to have multiple calendars under the same account, for instance a team account and an individual account, you can toggle between them to find the calendar with the right events.