Sorry it's my first time posting.
I have researched this and haven't found what I need.
I have two main tables.
TDY (Table)
ID (PKey)
Program
Location
Purpose
PM
ED
CT
Vacation (Table)
TeamMemberID (PKey)
Start Date
End Date
PM
ED
CT
I have a for that the PM fills out with all the columns in my TDY table. After the start date and end date they have to select individuals from ED and CT which are dropdowns made with comboboxes. I need something to help when an individual is selected, it would check my tables for availability and return a message if they are not available based on person, start date and end date.