If you have a text field in your table that stores the account name in a field, then this script will find the appropriate records in that table:
Enter find Mode  //clear the pause check box
Set Field [YourTable::YourAccountNameField ; get ( AccountName ) ]
Set error capture [on] //keeps dialog from interrupting script if no records are found
That's the basic idea. There are many possible variations of that script you can use to get what you need.
"My ultimate goal is to restrict chapter officers access so they only see members of their chapter." - by taking them to their 'own' layout you will, presumably, achieve the goal of them only seeing their own members' records through any relationships that are visible on that layout. But I think I would also set their access privileges to only be able to see any member's record where they are listed as their Chapter Officer.
Also, you mention taking them to a specific layout (as well as a specific record). Is the 'security' implemented by what's on the layout, or what's visible on the record? Or both? You would also need to build in security that they can't choose to simply change layout, or click to another record.
I agree completely.
Manage | Security should be used to limit access to the records. Then a find script such as I've suggested can be used to keep greyed out "access denied" records from being seen by the user. (Though any find will automatically omit access denied records, so you wouldn't actually need to do a find based on the account name.)
See "Editing record access privileges" in FileMaker Help and check out this particular sub section: "Entering a formula for limiting access on a record-by-record basis" for a detailed description of how to set this up.