There are several ways to help a person with dementia:

1. Provide a safe and familiar environment: Help the person with dementia feel safe by minimizing any changes to their environment. Keep furniture in the same place and keep personal items nearby.

2. Communicate effectively: Speak clearly and use simple language. Repeat instructions if necessary and give the person with dementia time to respond. Use non-verbal cues such as gestures and facial expressions to help them understand.

3. Be patient and understanding: Dementia can cause confusion and frustration, so it's important to be patient and understanding. Avoid correcting or arguing with the person with dementia.

4. Encourage them to stay active: Engage the person with dementia in activities that they enjoy and that are appropriate for their abilities. This can include simple exercises, games, and hobbies.

5. Help them stay connected: Encourage the person with dementia to maintain social connections by arranging visits with friends and family, or taking them to social events.

6. Provide care and support: Provide assistance with daily activities and personal care if needed.

7. Seek professional help: Consider seeking help from a healthcare professional or a support group for caregivers. They can provide additional guidance and support.

It is also important to remember that dementia is a progressive disease and the level of care needed will change over time. Therefore, it is important to regularly reassess the needs of the person with dementia and adjust the care plan accordingly.