(a)When depositions may be taken. Following publication in the FEDERAL REGISTER of a Commission notice instituting the investigation, any party may take the testimony of any person, including a party, by deposition upon oral examination or written questions. The presiding administrative law judge will determine the permissible dates or deadlines for taking such depositions. Without stipulation of the parties, the complainants as a group may take a maximum of five fact depositions per respondent or