I am about to punch out my dads lights,hes 96 yrs old and has two mental health issues?

hes brain injured and has alzheimers disease,,my brther enlisted my dad in a senior social club of which i belong to also,its to get him out of the house and into the company of others so he doesnt sit home on the couch and sleep.hes missed one day and i missed a day because i had to sit with him,we cannot leave him alone,this morning it was his turn to go and hes ulling his dawdling routine on me.we have an aide that comes in at 3pm,i have things to do and i will not sit home and daddy sit til the aide comes in.hes a very stubborn man thickheaded.he has no memory and wants everything his way.todayit was his turn to go to the club,im not going to sit home with dad again,i told him he cannot be left alone,his response was------who said so,i can stay home alone! he cannot be trusted alone as hes a wanderer.,hes flown the coup three times already.my mom is in the hospital and knowing my dad if left alone he might try to hike the 4 miles to the hospital,and get his tail lost.he wants his independance back and he cannot have it.why is it thaty bi always get stuck with my dad,my brother has a responsibility too i cannot be his guardian 24/7.i have a life too.