We have a handful of vendors that we want to pay electronically. From a banking perspective, the withdrawal will be a lump sum total for all the vendors. What is the best way to take this lump sum total and apply it against individual vendor transactions in A/P?

Do you have EFT integration enabled in Adagio Payables? That would be the best way.

The AP company profile (integration tab) has an option 'post system checks in detail', which controls whether the GL entries are detailed or consolidated when using Print/Post Checks and Advices. Disabling this option will write a consolidated amount to the Bank GL account.

This option does not change how Payables works (ie taking a single amount and applying to multiple vendors within a manual check batch). It simply affect GL details.

If you simply want to select these specific vendors within a Print/Post Checks and Advices session, you can create a report group EFT and assign it to these vendors. When running Print/Post Checks, select a report group range of EFT to EFT and only these particular vendors will be selected.