There are a number of designs that are available for hire, and these differ according to the surface on which they can be used and the height they can operate. Some of these you can operate yourself; whilst for others, you will need to hire an operator. The hire company should be able to advise you as to the platform that best suits your requirements. Be warned that platforms are expensive to hire, and therefore might be used only when there is no other option or if the amount of work and time saved by using a platform (as opposed to scaffolding) is of clear benefit.
Scaffold towers provide a safe platform for one or more people, depending on their specification, and are useful for work that would be too arduous on a ladder. The majority of towers have several sections that slot and clip together in stages, building up to the required height. They are best used on solid ground, however if you are building a tower on soft ground, place boards under its feet to spread the weight, and ensure that it is level. You should fit stabilizers at the bottom to secure the tower in position, and tie it in to the building on the upper level. Some towers have wheels, and can be moved to different working positions, if resting on solid, level ground. Never move a tower whilst there are people, tools, or materials on any part of it.
The access provided by fixed scaffolding is essential for some jobs, such as re-tiling a roof. It can also offer an opportunity to carry out exterior maintenance. For example, if the scaffolding is erected for roofing work, use the opportunity to check the gutters, and refix any loose downpipes. Erecting fixed scaffolding is a job for professionals, but check that the firm you employ has the correct certification or licence, as well as insurance.