To add a measurement manually, click on the ADD NEW MEASUREMENT button.
When you click on it, a form will appear where you can enter the data:
Measurement Date (see 1) Measurement Time (see 2) Systolic pressure (see 3) Diastolic pressure (see 4) Pulse (see 5) Notes (see 8) Irregular pulse slider (see 7) - sliding it indicates the measurement result during which an irregular pulse occurred.