Reserve equipment manually
You can manually reserve equipment to solve some kind of shortages (depending on the explanation of the shortage).
Set up alternatives
You can add similar equipment as an alternative to other equipment to plan on projects which can solve your project's shortages quickly.
Add an internal or an external subrent
Equipment Scheduling Pro
In the sub-folder Subrentals or in the Equipment tab of a project, you can add a new subrent for the needed equipment items. Your stock is increased for the period of the subrent so that your equipment shortages can be solved.