how to make anadir se impersonal

Question

anadir needs to be se anade or se anada

Answer 1

It is añade, like in the example:

Después del jitomate se añade la lechuga. (After tomato, the lettuce is added)

but the subjuntive is añada like in:

Después de que me añada al grupo, viajaré por todo el mundo After joining the group, I'll travel around the world

Answer 2

I can't understand your question :O)