Site edits in several stages (on Bitrix)

Within 2 weeks it is necessary to make edits to the purchased template site on Bitrix (person. Business). Edits will be made on the basis of a few short TK. We need a specialist who knows Bitrix (not just seen or trained, but has practical experience) and is not very busy (it is very necessary not to stretch these edits for several weeks, but to make them quickly. The site from which you need to make a candy here sanprof.ru/