Is there any way I can have a date picker display only if certain options are selected in a radio button field?
Subject: Field Properties
If, by “only if certain options are selected,” you mean “dependent on values entered into other fields on the same form by the end user,” then I’d recommend creating two editable fields, displaying one or the other depending on the desired conditions, and adding a third, hidden, computed field which is the “real” date field, and which fills itself in from whichever of the other two is used.
Of course, there are any number of details to manage here; how to deal with values in both editable fields when the user first fills in one and then the other (after the second becomes visible); how to handle the fact that date-picker-filled date-time fields contain only a date, whereas manually-filled date-time fields will always contain both a date and a time, even if the user doesn’t enter a time and you’re not displaying it to them; or others I’m not thinking of right now.
And that response, of course, is only useful if this is a Notes-client-only app.