As stated, schizophrenia cannot be cured, but one thing you can do is make sure the person takes his/her medicine daily. You can help them to keep track of their medication, help them pay for it, and continue to encourage them to take their medicine when they begin to think they don't need the medicine anymore. You can also just try to be as supportive as possible in regards to whatever hallucinations they may be having. Furthermore, you can come to their appointments with them so that they will not feel isolated and alone. You can also provide your insight to their psychiatrists so that the doctors can see what type of issues may need to be addressed.
I shall answer this, if I may, from my perspective being myself a diagnosed paranoid schizophrenic since the age of seventeen.
As soon as a problem with an individual is noticed, any self destructive behavior, strange activities, possible delusions, violent tendancies, dissociative symptoms, and other such problems, getting them help should be your top priority. If the individual is a minor, than one has maximum control, and this is the best timing for this. If they are dangerous to self or others, have threatened suicide, or threatened other people, you can have them Baker Acted and then kept voluntarily in the mental/behavioral center.
If the individual is an adult, you can still have them Baker Acted, but you cannot keep them voluntarily; only they can choose to stay voluntarily.
Once a person is diagnosed with Schizophrenia, they will most likely have been on multiple medications by this time. The key is to try to help that individual stay on a regular medication regime to keep stability. Minors, although they may resist, are still under their guardians jurisdiction, and so are easier to keep on such a schedule.
Adults on the other hand, unless you have them placed under Guardianship, may decide to leave, or make their own decisions regarding their medications. In this situation you can only do your best to try and help them as much as you can by loving them and providing a stress free environment, where they know that they are going to be cared for and loved unconditionally.
Disability is often an option for those who cannot work due to stress levels, voices, hallucinations, delusions, catatonia, etc... Whatever the reason is, if the person feels incapable to work, and is able to provide enough physical evidence that they are not fit to do so, they may be able to get a small income from the government, and get Medicaid in some circumstances.
To conclude, a person with schizophrenia is at the core like any other person; we want to be liked, loved, and cared for. We need our medications, we need therapy. Often we have PTSD from traumatic events from things that have resulted from our schizophrenia. We want to have places to go where people won't judge us. We want to be able to cry sometimes without someone telling us to settle down. Sometimes we just need a hug, and sometimes we need people to just shut up so we can hear ourselves trying to think, because god knows its so hard sometimes. We need somewhere that we can go where we know it will be peaceful and calm, and we don't have to be afraid. We need to be understood.
Schizophrenia is a chronic disorder, and therefore cannot be cured. Schizophrenia can be treated to reduce the impact of symptoms. However, much of the treatments for Schizophrenia depend on the type of Schizophrenia expressed. Because Schizophrenia is a disorder associated with impairments in thought, mood, and anxiety, it is often treated with a variety of medicines. Specifically, antipsychotics, antidepressants, and antianxiety medicine are used to reduce the impairment associated with the effects of this disorder. However, a major problem with treating individuals with schizophrenia is medication adherence. Some studies have shown that up to 3/4ths of all Schizophrenic patients stop taking their medications. Psychotherapy options, such as motivational interviewing, may help with medication adherence.