I have an automatic approval process set up for all requests that require a purchase such as an employee requesting a new computer or requesting software that we have limited license availability on. These approvals go to the IT manager and they are set up dependent on the client selecting one of the request types. I have an instance where generally speaking this request type doesn't need an approval but the error the client is having is going to require more storage on his computer which incurs a cost and therefore needs to be approved. Is there a way the technician can add an approver manually to a ticket even though it is not one of the normal request types that require approval?
On demand approvals are not a thing unless you change the request type of the ticket and ensure there is an action rule to kick it off at a point other than ticket creation. There is a feature request to add support for something like this that you could upvote if the description sounds like what you are looking for On-Demand Approval Process.