I have a form with subdatasheets. In one subdatasheet [subLT], I have the field [TagNumber], which is a field in tblTags. I have already entered the tag number into tblTags with information on the date the tag was issued, who it was issued to, etc. When I get the tag back, I want to be able to enter the tag number in [subLT] and have the other subdatasheet [subTags], which is just tblTags, bring up the appropriate record with the tag number, then automatically enter information such as the date the tag was returned (which would be based on a text box on the form).
The issue I'm having is not being familiar with filtering in general, plus not being familiar with filtering a subdatasheet based on a field in another subdatasheet, then automatically entering information to complete the "Tag" record. Any information or examples would be greatly appreciated. Thanks.