Consider offering engineering-hours as a billable product, and allow companies to sequester your expert resources as services

I was considering some long-standing Remote Desktop Manager projects, then considering hiring outside services for help,

I thought about other services my company uses and recall that most of them offer some sort of ancillary services like I've described above.

A few which come to mind:
Installation and migration (to include specialized database work)
Customization and tailoring (company engineers will tailor your instance of their service as you require)
-- though purchased as an additional product, I recall that some of our more costly tools come with a "10 engineering hours accrued per year" as part of our service contract.
-- I recall being told their engineers could even create alternative color schemes, CSS layouts, and whatever we could think of.

Configuring,
Consulting and planning,
1-1 training & tutoring
group tutoring , especiallly during onboard.

Similar to "support", but instead "business services"



Basically: it'd be cool to hire the experts directly than trial a freelancer.