The procedure is to distribute course evaluation forms and leave the room.
Arrange for a student to collect them after 10--15 minutes.
The student can meet you in the hall and you can escort the student to the office to leave them on Natasa's desk.
Then return and carry on.
If the course evaluations are not ready for the last lab, you will have to do them at a lab practice/makeup or with the lab final.
You may have to have students do them in one by one or in groups, and just escort the last student to Natasa's desk.
You are not supposed to touch filled out forms---they're radioactive.
Scheduling them for the make-ups is probably good practice.
People with more than one lab missing are entitled to a makeup.
People who have missed only one are NOT entitled.
They can do them with instructor permission.
The instructor has to be fair about permissions.
In a one-missing-lab case, doing the lab will usually only change a student's grade by a small amount.
But we want them to have the experience of the lab---a course is not about grades.
Usually, one can arrange for them to come just when they need to for the lab final.
If you are having them come at separate times and are ready, you can schedule them for the lab final.
Or you could leave the scheduling to later and just email them their times.