The "Protected lobbies" were the only types of compartments that could be assigned directly from the space itself.
From now on (version 2024.b), "Protected lobbies" shall be entered in the same way as all other compartments (fire compartments, risk rooms, stairways, protected zones) to make it easier to use the "Assign" tool.
Also, as of version 2024.b, the "Minimum built surface area" check for "Protected lobbies" has been included.