You need administrative rights to the computer.

sjrcpa is probably correct, but just in case you have not done this yet - here it is https://proconnect.intuit.com/community/manage-access/help/manage-users-for-lacerte/00/4897

No kidding, of course we need administrator rights.  Read the question.  Only one person who has admin rights.  How about explaining how to get administrator rights?  That might help.

@MikeCurnow has not started out on a good foot. What is your question? Why are you making a negative statement on something that is almost a year old. Try Googling "how to set administrator rights on Lacerte"

This forum has a horrible search. 99% of the answers are from other users whose mind reading capabilities are fairly limited, but we typically try to stay civil. 

Best of luck.