There is a good advice that you for this type of questions include
CREATE TABLE statements for your tables, INSERT statements with sample
data, and the desired output given the sample. This can help to clarify
your question. Below I have such a script, that should address your
problem as I understood it, but in case I misunderstood, it will be
less useful. I could not resist including a solution for SQL 2005, since
this is a single query, whereas SQL 2005 requires a temp table.

CREATE TABLE jobs (jobtype varchar(20) NOT NULL PRIMARY KEY,
                  cnt     int NOT NULL)
CREATE TABLE actions (jobtype varchar(20) NOT NULL,
                     unit    varchar(20) NOT NULL,
                     action  varchar(20) NOT NULL,
                     PRIMARY KEY (jobtype, unit, action))
INSERT jobs (jobtype, cnt) VALUES ('Dentist', 2)
INSERT jobs (jobtype, cnt) VALUES ('Plumber', 1)
INSERT actions (jobtype, unit, action)
   VALUES ('Dentist', 'A', 'Audit')
INSERT actions (jobtype, unit, action)
   VALUES ('Dentist', 'A', 'Test')
INSERT actions (jobtype, unit, action)
   VALUES ('Dentist', 'A', 'Visit')
INSERT actions (jobtype, unit, action)
   VALUES ('Dentist', 'A', 'Retire')
INSERT actions (jobtype, unit, action)
   VALUES ('Dentist', 'B', 'Audit')
INSERT actions (jobtype, unit, action)
   VALUES ('Dentist', 'B', 'Test')
INSERT actions (jobtype, unit, action)
   VALUES ('Dentist', 'B', 'Visit')
INSERT actions (jobtype, unit, action)
   VALUES ('Dentist', 'B', 'Retire')
INSERT actions (jobtype, unit, action)
   VALUES ('Plumber', 'A', 'Visit')
INSERT actions (jobtype, unit, action)
   VALUES ('Plumber', 'A', 'Retire')
INSERT actions (jobtype, unit, action)
   VALUES ('Plumber', 'B', 'Audit')
INSERT actions (jobtype, unit, action)
   VALUES ('Plumber', 'B', 'Test')
go
-- SQL 2005
SELECT a.jobtype, a.unit, a.action
FROM   (SELECT DISTINCT j.jobtype, j.cnt, a.unit
       FROM   jobs j
       JOIN   actions a ON a.jobtype = a.jobtype) AS j
CROSS  APPLY (SELECT TOP(j.cnt) a.jobtype, a.unit, a.action
             FROM   actions a
             WHERE  a.jobtype = j.jobtype
               AND  a.unit    = j.unit
             ORDER  BY newid()) AS a
ORDER BY a.jobtype, a.unit, a.action
go
-- SQL 2000
CREATE TABLE #temp (ident   int         IDENTITY,
                   jobtype varchar(20) NOT NULL,
                   unit    varchar(20) NOT NULL,
                   action  varchar(20) NOT NULL,
                   PRIMARY KEY (jobtype, unit, action))

INSERT #temp (jobtype, unit, action)
  SELECT jobtype, unit, action
  FROM   actions
  ORDER  BY jobtype, unit, newid()

SELECT t.jobtype, t.unit, t.action
FROM   #temp t
JOIN   (SELECT jobtype, unit, minident = MIN(ident)
       FROM   #temp
       GROUP  BY jobtype, unit) AS t2 ON t.jobtype = t2.jobtype
                                     AND t.unit    = t2.unit
JOIN    jobs j ON j.jobtype = t.jobtype
WHERE   t.ident BETWEEN t2.minident AND t2.minident + j.cnt - 1
ORDER   BY t.jobtype, t.unit, t.action
go
DROP TABLE jobs
DROP TABLE actions
DROP TABLE #temp