I started to read phrases that contained part informing that the future action is mentioned (can be verb in the future tense or a word such as "avisame") which was also paired up with the word "cuando".
Avísame (future) cuando hayas terminado de hablar con tu esposa.
Podrás (future) volver al trabajo cuando te hayas recuperado.
Is it a general rule that when the future is mentioned and the word "cuando" is used the next verb is going to be in subjuntivo?