Regarding Submit button

In general, the only way to direct where a user is "returned to" after any particular task or action, is where they started from.  If they open a task or start a process / record action from a certain site page / dashboard, when that task or process concludes, that's where they'll return to after it's over.  Konduru's suggestion is thus the correct one in general, that is, if you want a user to be returned to a summary dashboard following an update, then you'll want to allow users to start the "update" action / record action from that location.  But there's not any particular way to manually "redirect" or "return" users to any specific place following actions like this.

In general, the only way to direct where a user is "returned to" after any particular task or action, is where they started from.  If they open a task or start a process / record action from a certain site page / dashboard, when that task or process concludes, that's where they'll return to after it's over.  Konduru's suggestion is thus the correct one in general, that is, if you want a user to be returned to a summary dashboard following an update, then you'll want to allow users to start the "update" action / record action from that location.  But there's not any particular way to manually "redirect" or "return" users to any specific place following actions like this.