Setting up a documentation unit is one thing; running it is another.
DDL has run documentation departments a number of times over the years.
Normally this is because of senior staff resignations and the search for suitable replacements is slower than anticipated especially if a new head of department is being sought. Another reason is because of audit findings where radical change is needed. Here DDL typically acts as interim managers pending the arrival of a new head of department or other senior staff who need to serve out notice periods with current employers.
Where improvements are necessary because audit points have been raised but no staff changes are needed, DDL typically works with the head of department to put new practices in place efficiently and quickly.