Move one lesson.
Not the whole term.

Start with a finite list

Our fictional tutor has four Wednesday lessons, each at 18:00 for 45 minutes in Europe/Madrid. Imagine making these changes on 10 November 2026, before any of the lessons happen. This check works on paper or in your own calendar; it contains no customer data.

W1 to W4 are labels for this worksheet, not promised app fields or export columns. A label follows the appointment when its date changes.

Move only W3

The agreed change is Wednesday 25 November to Thursday 26 November, still at 18:00. Keep W3 and note its old and new dates. Do not also leave an active appointment on 25 November, or shift every later Wednesday.

On a narrow screen, scroll the table sideways to compare all four columns. The region can also receive keyboard focus.

After the move there are still four noncancelled appointments. Checking the total alone is not enough: a missing W2 and duplicated W3 could also total four. Check every label and date.

Cancel the remaining dates deliberately

Now imagine a separate agreement: no lessons from 27 November 2026 at 00:00 Europe/Madrid onward, including that cutoff. Only W4 falls in that part of this example.

Keep its cancelled row and the reason. The record still contains four original appointments, but only three are noncancelled. Do not mark earlier lessons completed simply to tidy the list.

Before confirming any remaining-series action, read the affected dates and count. A tool may start from the selected occurrence rather than offer an arbitrary cutoff field. Check how its confirmation defines the scope instead of assuming how the button works.

Keep scheduling separate from charging

A changed date is not proof of attendance, payment or a credit charge. Apply the actual agreed policy separately. This worksheet does not recommend a universal cancellation policy or create a makeup entitlement.

For the different question of how outcomes affect prepaid balances, use the worked lesson-credit ledger.

Copy this check

Use it in a private document or on paper. No account, email address or app download is required.

Client or private reference:
Finite dates or occurrence count:
Named time zone and local start time:
Occurrence being changed:
Old date and agreed new date:
Scope: one occurrence or remaining series:
First affected occurrence or inclusive cutoff:
Before/after dates checked for missing or duplicate lessons:
Cancelled rows and reason retained:
Final dates confirmed with the other person:

Write the time zone with the intended local time. If your schedule crosses a clock change, verify the actual local dates rather than assuming every week is a fixed 168-hour jump. A saved change does not prove the other person received or accepted the revised dates.