As CarolynFH mentioned, you can book assign others as the owners of a reservation (if making ADRs online, not on
MDE app) which would allow you to continue to make a reservation with yourself as an owner.
In order to do the above there are a few small pre-steps, if others in your traveling party have a Disney account, link them to your travel plans in MDE first, that way they are available in the drop down list and they can manage the reservation through the app/MDE without the need to call Disney. If you have entered your travel party in your MDE, instead of linking, the owner you select will need to call Disney Dining to make any changes/cancellations.
One other tip, you can also make ADR at many restaurants in DS by calling the restaurant directly or booking through open table. This is how our party of 11 was able to reserve a table for mid-June in March.
Hope this helps and that you all have a great trip!