Although Aglaoanemas can be rooted directly in soil, I find that the success rate is better if you root them in water first. Two weeks isn't long enough, however. You will have to wait until they have several roots at least an inch long before moving the cuttings to a small pot filled with a peat-based soilles potting mix.
The more cuttings you put in the same pot, the fuller-looking
plant you will have. About six per pot is a good number.
When potting them up, use the smallest pot that they will fit into when the cuttings are held together in your hand. Move them up one pot size only when they become utterly potbound.
In a small pot with a good potting mix, you shoud water as soon as the top half-inch of potting mix feels dry.
Lots of bright, but indirect light is best. A north windowsill is a good spot. Keep them inside.
Nix on the fertilizer; it doesn't help and can do some damage.
Let me kmow if you have any questions.