There are new meeting duration restrictions for certain types of plan exams. You can make an appointment online for reviews of BIS job filings here.
New Buildings (NB)
These appointments will be 40 minutes long. Up to two of these appointments are allowed to be scheduled simultaneously for the same job and document number.
All Jobs except New Buildings
Appointments that are made after June 14th, 2019. will have a duration of 20 minutes, reduced down from 40 minutes.
For Alt1 jobs, two of these appointments are allowed to be scheduled at any given time for the same job and document number. These can be back-to-back in order to last for 40 minutes total for a more complex matter.
There is only one appointment allowed to be scheduled at a time for Alt2, Alt3, and all other jobs.