Use the Add 1 Equipment button on the Task entry, Equipment List Tab to schedule (see scheduling concepts) a piece of equipment for the current task.  Simply fill out the form and click OK.  The Equipment selected will be added to the current task.

NOTES:  If Schedule By is disabled (with Schedule by Days selected) this means that the selected equipment is not metered.  See Equipment Setup to flag whether the piece of equipment has a meter reading associated with it.