same table for two applications

Hi,

 im using two tables  for two diferent   applications because fields in both applications are common. except in one application has one column extra ClientID

below are two tables

CREATE TABLE [dbo].[EmployeeTSDates](
	[TSID] [int] IDENTITY(1,1) NOT NULL,
	[ClientID] [int] NULL,
	[EmployeeName] [varchar](50) NULL,
	[TSStartDate] [datetime] NULL,
	[TSEndDate] [datetime] NULL,
 CONSTRAINT [PK_EmployeesTable]





CREATE TABLE [dbo].[EmpTimesheet](
	[ID] [int] IDENTITY(1,1) NOT NULL,
	[ClientID] [int] NULL,
	[EmpID] [int] NOT NULL,
	[EmpName] [varchar](50) NULL,
	[StartDate] [datetime] NULL,
	[EndDate] [datetime] NULL,
	[day] [varchar](50) NULL,
	[date] [datetime] NULL,
	[Service] [nvarchar](max) NULL,
	[Venue] [varchar](50) NULL,
	[Project] [varchar](50) NULL,
	[StartTime] [varchar](50) NULL,

In one applicaion i dont need ClientID so CLientID isalways empty  but in another application it has ClientID =32

below storeprocedure for  without clientid

ALTER PROCEDURE [dbo].[Sp_EmployeeTSDates_InsertGet]@empName varchar(50),
	@tsStartDate datetime,
	@tsEnddate datetime  
AS
BEGIN
	-- SET NOCOUNT ON added to prevent extra result sets from
	-- interfering with SELECT statements.
	SET NOCOUNT ON;

    -- Insert statements for procedure here
if exists
	(SELECT TSID from EmployeeTSDates nolock where Employeename = @empName and TSStartDate = @tsStartDate)
begin 
SELECT TSID from EmployeeTSDates nolock where Employeename = @empName and TSStartDate = @tsStartDate
end
else
begin 
insert into EmployeeTSDates (Employeename, TSStartDate, TSEndDate) values (@empName, @tsStartDate, @tsEnddate)
SELECT TSID from EmployeeTSDates nolock where Employeename = @empName and TSStartDate = @tsStartDate

end



END

below procedure wih client ID

ALTER PROCEDURE [dbo].[Sp_AEmployeeTSDates_InsertGet]
	-- Add the parameters for the stored procedure here
	@empName varchar(50),
@clientId int,
	@tsStartDate datetime,
	@tsEnddate datetime  
AS
BEGIN
	-- SET NOCOUNT ON added to prevent extra result sets from
	-- interfering with SELECT statements.
	SET NOCOUNT ON;

    -- Insert statements for procedure here
if exists
	(SELECT TSID ,ClientID from EmployeeTSDates nolock where Employeename = @empName and TSStartDate = @tsStartDate)
begin 
SELECT TSID from EmployeeTSDates nolock where Employeename = @empName and TSStartDate = @tsStartDate
end
else
begin 
insert into EmployeeTSDates (Employeename,ClientID, TSStartDate, TSEndDate) values (@empName,@clientId, @tsStartDate, @tsEnddate)
SELECT TSID,ClientID from EmployeeTSDates nolock where Employeename = @empName and TSStartDate = @tsStartDate

end



END

my issue is  do i  need to create another  two more tables(emptimesheet1,emtsdates2) for without clientID application