Microsoft SQL 2005 -- conditional database table trigger

How can I change the below  --> @if INSERTED.ProjectID = 'TEST' then run below else got to next database trigger (workflow3, 4, 5, 6....) ?

Basically I want to have 5+ database triggers using something like the below "AFTER UPDATE, INSERT" logic.
   ** if ProjectID = 'TEST' then only run MAINT_WORK_REQ table's workflow2 trigger
   ** if ProjectID = 'TEST3' then only run MAINT_WORK_REQ table's workflow3 trigger
   ** if ProjectID = 'TEST4' then only run MAINT_WORK_REQ table's workflow4 trigger  
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CREATE TRIGGER [dbo].[workflow2]
ON [dbo].[MAINT_WORK_REQ]
      AFTER UPDATE, INSERT
AS
BEGIN

@if INSERTED.ProjectID = 'TEST'
  then run below
  else got to next database trigger (workflow3, 4, 5, 6....)

            update M1
        set ActivitySequence = '1'
            from MAINT_WORK_REQ M1
            join INSERTED I
            on I.ID = M1.ID
            
            ....... more functions here ..........
   
            EXEC msdb.dbo.sp_send_dbmail
           @profile_name = 'mail',
           @recipients = 'user@user.com',
           @blind_copy_recipients = 'user@user.comm',
           @body = 'test',
           @body_format = 'HTML',
           @subject = 'test';
END