Not at this time.
Traditional indoor rowing machines are programmed with basic settings that count down as you row for a selected amount of time or distance. We may choose to add this feature in the future.
At this time, your best option is to select a Journey row by filtering the workout library and selecting Journeys from the Workout Type menu. Journeys do not have instructors, so you can row to your desired time or distance interval without distraction, and then exit when done. All of your stats (split, heart rate, S/M, meters) will be shown on screen while you row, just without an Athele.
Please note: Hydrow's Just Row mode does not a feature interval training. This mode offers limited-function capabilities for Hydrows without active memberships.