See what patterns develop and what common sense changes you can make. If wet every 3 hours, then you void every 2. When dry for 3 days, you increase the interval by half an hour. If the patient is confused, then prompted voiding by the attendant is used. If obstruction is ruled out, double voiding or voiding with supra pubic hand pressure will help.
Outlet obstruction is common in men because of prostate troubles.
In women, the bladder can herniate through the vaginal wall because of obstetrical injury, then the outlet tube is kinked. Outlet incontinence is also due to pelvic floor laxity and urethral hyperactivity. Again exercises help. Laser prostatectomy may be less damaging. Some women will need surgical correction.