I want to set a date/time field to the current systems dated & time when a user checks a Yes/No field. For example, "[Yes] - Equipment was collected" set the PickUpDate Field (Date/Time) with the current system date. I am not a developer so I am looking for a simply solution
Another way to do this could be to have a simple single line of text field, with the "Common" variables of Current Date / Current Time. If you want it to fit into a date / time field, you'd need to run a workflow after the form is submitted in order to convert that to a date / time field. I'm not sure how simple it would be to convert it to a date / time field from a single line of text, but since it'd be in "computer speak", probably not too hard.
If you just need the date that the checkbox was checked, you could instead run a workflow when the form is submitted - and, if "Yes" is checked, the workflow could populate that field for you. I believe that simple workflows (under 5 actions) are now free, too, so this wouldn't hit that. Conditional run, get current date / time, update field, save!
Just stumbled across this trying to achieve the same thing, Its an old post however thought I'd share the solution.
To capture the "current date" that an item is closed and to prevent the date being recorded if the action is left open I used an a calculated value for the "Date Closed" field.