Every Job must have at least one client linked to it before it can be saved.
To do this:
Further to each job requiring at least one client to be linked to it, each helpdesk job also requires that one of these clients is marked as a "primary client". If a helpdesk job only has one client linked to it, that client automatically becomes the primary client.
When multiple clients are linked to a job, to specify who is the primary
client, click the Links tab, click the Clients option,
select a client and then select Primary
entity.
The Primary Client designation is simply a "tag" given to one of
the linked clients to identify them as the main contact for the job. It
is also used when sending email via the
Action screen. The primary client
has it's own email checkbox so that email can be deliberately targeted to the
primary client.
See also
User settings - Adjusting how HelpMaster searches for clients when you start typing