Mobility is the least restricted when the person uses incontinence pads that have soft elastic waists because they are not as bulky as other pads. The elastic waist encourages their use of the toilet because they are easier to adjust than zippers or buttons.
Balance and trunk control may be inconsistent and require raised toilet seats / frames / grab bars to assist with transfers and standing balance. An insecure installation of a toileting aid cannot be detected by a person with a cognitive disability. Someone else must install and monitor stability. Recommend equipment that can be securely bolted into place, such as a toilet safety frame / throne toilet support system, which is bolted onto the toilet pan. The installation is independent of the surrounding walls.
Men do not have enough trunk control to stand and urinate, but some will want to. If they insist, the assistance of two people may be required to support the trunk and the knees.