Same problem here. One table is used to record, say, 4 transactions (one each week for a month) for a vendor. A second table records a single check written for those 4 transactions. When I record the check number, I link to the transactions table, and although searching for the records I want is easy, the list gets cumbersome.
If I could either filter the link or use cntl key to multiple select, I wouldn’t have to search and select 4 times for each check.