Conditionally showing a FORM

[Craig_Clancy1]

Looking for a direction please.
Is there a way to show a specific form to be completed based on the number of previous forms already completed.
For example, I only wish to complete a certain form once a different form has been completed 4 times.
The Scenario: I have a plant inspection that requires an ‘A’ service for 4 times and then a ‘B’ Service on the 5th inspection. I need the User to only see the ‘B’ service every 5th inspection.
I can’t relate it to a time frame or day of week as the inspections are based on the number of uses. The machine could be used only once a week or 5 days a week.

My thoughts so far are:

1. Have one continuous Form for the 5 services and have a column count the number of previous ‘A’ services, and in the Form have a SHOW_IF expression for the 5th service.
2. Not sure of a way to Display a Form menu if it’s the 5th service as the Display->Show if is not able to use columns in the expression.
3. Some Action with LINKTOFORM but that will need User input to select the correct Form (I think)

Any guidance/direction would be appreciated. Thank you