Access - How to organize the work of the Form through a query?

Question

Microsoft Access

Can you please explain to the teapot how to create a Form job through a Request?
Essence: There is Tab1 with fields: №1, Name_A, Name_B, Property_1...9, Date!.
Is Tab2 in which records from Tab1 are selected. It contains fields: No. 2, No. 1, Characteristic_..., Date2. The ratio is 1 to 1.
To fill in Tab2, I create a divided Form, in which there will be fields: No. 2, No. 1, Tab1.Name_A, Tab1.Name_B, Characteristic_..., Date2.
I understand that because Name_A and Name_B should be taken from Tab1, and everything else from Tab2, then the work of the Form must be organized through a Request. But as? At random - something does not work. Or where can I see the subtleties in detail and step by step?