Count players and opportunities in separate columns
For the senior competitions described in Law 3 that allow five substitutions, the ordinary allowance includes three substitution opportunities plus half-time. Several changes in one stoppage can use one opportunity. Five is therefore a player count, not permission to interrupt play five separate times.
Imagine a coach replaces two players together in the 60th minute, then one in the 70th and two in the 80th. The player column totals five. The opportunity column totals three. Compare five single-player changes at five different stoppages: the same player total gives a different opportunity record.
A half-time change changes the arithmetic
Now move the first two changes in that invented example to the interval. Their timing matters to the opportunity calculation, not just the minute printed beside each substitution. That is why a graphic showing only five names can be insufficient to reconstruct what remains available.
Keep a compact record with one row per stoppage and list all names changed in that row. Mark half-time separately. This makes the allowance easier to follow than counting every replacement animation as another window. Competition provisions about extra time or other permitted substitutions need their own checks; this article explains the ordinary five-player, three-opportunity relationship rather than assuming every match uses identical allowances.
Questions answered
Do two changes together necessarily use two opportunities?
No. Multiple changes in the same stoppage can share one opportunity.
Is this a universal five-substitute rule for every form of football?
No. Competition and category provisions determine the applicable allowance.
Sources & further reading
Official references for the subjects discussed. Service terms and device software can change.