To-do list question

If you have a long list of 2-3 minute computer tasks (ex. reschedule dr. appointment, renew library books online, etc.), do you suggest adding them each to your calendar individually, or schedule “computer tasks” into your day and keep a separate list of the specific tasks somewhere? It seems it would take just as long to enter them into my calendar as it would to complete the task. If I don’t record these tasks as they arise, I tend to forget.