Modern Doubling Technique
Step 4-Decide Which Characters Can be Doubled
The person in charge of the doubling needs to establish all the possible doubling options before making decisions. The first rule is that actors cannot play characters that appear in consecutive scenes because they need time to exit, change their costume and re-enter. But if there is one French scene between their exit and subsequent re-entrance, doubling may be possible.
The section of text you have analyzed could be performed by 7 actors even though there are 9 characters. Take a look at the chart and consider which characters could be doubled.