To assign / dispatch a Job to an App user using the Web Portal is the same as assigning a Job when you are creating it. In the Web Portal, go to Jobs > New Job > Enter job details > Select the User from the Drop Down Box beside Assign To > Save / Dispatch once all required job details are entered.
If it is an existing job you can go to Jobs > Jobs List > Edit the Job > Assign the User > Save / Dispatch.
