Hey @VaishaliVyas
Well looks like CRM isnt the problem.
I guess it is the submit that doenst do the job.
I would suggest that you take a copy of your current app and try the following on the submit button:
Patch(<datasource>,Defaults(<datasource>), {Title="", <Field>: <NameOfYourControl>.<TypeOfField>,..})
So in your case it could be something like this:
Patch(<datasource>,Defaults(<datasource>), {Title="", StartDate: StartDate.SelectedDate, EndDate: EndDate.SelectedDate, Hours: HoursTextbox.Text, Minutes: MinutesTextbox.Text})
Hope this helps
Kind regards
Tom