I've Done This Before But Now I've Forgotten :(

I have a main form with customer information on it. Id, Name, Address etc and 4 buttons to take me to other forms such as Works Needed, Therapist Info etc.

What I want is the four extra forms information to link to the ID on the main form so when I change record on the main form all the other information changes on the other forms.

Help needed please. About to bang head on hard wall.