Hi there forum,
I really need your assistance with this problem.
I have a table (tblInstallations) which has records of date installed (for machines).
It is calculating that "next due maintenance" is one year after installation.
Sometimes we need to visit the site to maintain or service the machine before/after the specified date in "next due maintenance" and we need this to be calculated to reflect a year after date of visit.
I have a table called "tblMaintenance" which takes information about the machine an engineer is visiting from where originally the information are kept and that is in "tblInstallations".
My question/problem is: How can I link the new date of the visit to update the record for "next due maintenance"
Many thanks for your help in advance
I really need your assistance with this problem.

I have a table (tblInstallations) which has records of date installed (for machines).
It is calculating that "next due maintenance" is one year after installation.
Sometimes we need to visit the site to maintain or service the machine before/after the specified date in "next due maintenance" and we need this to be calculated to reflect a year after date of visit.
I have a table called "tblMaintenance" which takes information about the machine an engineer is visiting from where originally the information are kept and that is in "tblInstallations".
My question/problem is: How can I link the new date of the visit to update the record for "next due maintenance"
Many thanks for your help in advance