Is it okay for a professional signature technician to work out the general plan of the construction drawing?
You can't. In principle, each signature column in the general layout column of the construction drawing needs to be signed by a designer with corresponding qualifications, and the professional signature is also carried out by the designer, not the technician. Construction drawing refers to the general layout of the project, the appearance, internal layout, structural structure, internal and external decoration, material practices, equipment and construction requirements of buildings and structures.