Expectations of Employed Caregivers

My wife is stage 5-6 AD and at home. She is mobile, can communicate, although usually not correctly, still uses utensils to eat, is not incontinent, enjoys social time with others (not so much with me but that is not unexpected), exhibits confusion, anxiety and agitation. Medication has helped with the agitation and volatile outbursts and calms her anxiety a bit. I have caregivers daily for 5-6 hours to allow me time to grocery shop, appointments, rest (although not well), etc. My direction to the caregivers is to care for my wife to make her safe and have as good a day as possible. I do not burden them with expectations of cleaning, laundry and all that stuff agencies promote. Just care for my wife. Here is the issue about which I hope someone here can help. Caregivers often allow my wife to nap or sleep or just sit during their shift. If she initiates some activity they will go along to monitor or maybe join in somewhat. The problem is that when my wife is not active during the hours the caregivers are on site, she has a lot of energy in the late afternoon and evening during her sundowning period. She paces, cannot sit still, is seeking activity, and yet she does not want me to participate. The caregivers are female and she enjoys that companionship in her activities. When they allow her to "rest" during the day with naps, sleep or just sitting, she has a bad evening and worse night. During the night she will get up frequently to walk the hallway which requires me to assist her resulting in a lack of sleep. What expectations do you set for caregivers? What tips might you have as to activities the caregiver can use to engage my wife to stay more active which hopefully will turn into better sleep for us both. Sorry for the long message to get to the point but would sure appreciate any suggestions you might offer.