Alerts. Accept on a disk alert. Or free space under is on the form, next to the percent. Accept is the button that saves it.
On Alerts, press accept on the disk alert. Wake when used reaches is already 95%, three points above the 92% it is at now. Or free space under is empty. The volume has 18 GB free, so a floor has to be under 18 GB or it has already happened. Accept a known condition is the note and the percent.
Type 10 in or free space under. The 95% line stays, so it also re-opens if used space reaches that first. Clear the percent when the free-space floor should be the only way back. 10 is under the 18 GB free now, so saving it would not wake the alert immediately. A number above 18 would. Accept saves it. This shot stops before that button, so the alert is still open.
The note and the percent are Accept a known condition. An end date on the same form is Accept a condition until a date. Taking it back by hand is Release an accepted condition.