add a button in .aspx as:
<asp:button id="btnLogin" runat="server" xmlns:asp="#unknown" />
select button go to properties window from there add Onclick event ( or double click this button in design view it will create onclick vent for the button).
In the event you can redirect the control to the page where you want to be after logging in.
such as :
Response.Redirect("~/xyz/BranchReport.aspx")
the thing is that you shoud practice more, these are basic things know,
well be freindly to google and learn basic tutorials.