Cell movement linked

[SelmaPease]

Hello everyone,

I have a question concerning the link between two cells.
I have a list of delivered Items and most deliver them myself a mont later.
All cells copied and moved by a month.
I would like to link the cells movements together so that if move the mother cell 1 dwn and two left the daughter cell does the same.
Meaning if I receive item later then demanded I can move her delivery date and it wil move mine.

For example, if A6 changes to B7, B6 will also automatically change with it and move to C7.

Is this possible to do?

Thank you,

Selma.