Aside from individual accounts, what other accounts are we allowed to open? What are the requirements?

Joint account ownership  

Joint account is an account held jointly by two or more natural persons, or by two or more juridical persons or entities. Joint accounts shall be insured separately from any single or singly-owned deposit account. 
The aggregate of the interests of each co-owner over several joint accounts, whether owned by the same or different combinations of individuals, juridical persons or entities, shall likewise be subject to the Maximum Deposit Insurance Coverage of Php1,000,000. 
For more information, you may visit  https://www.pdic.gov.ph/di_howtofileclaims_dot.

Corporate Accounts

• By-laws with the SEC Certificate of Filing
• Board Resolution authorizing the opening of the account  
• Board Resolution designating the authorized signatories for the account
• Corporate Secretary’s Certification of Elected Officers
• Two (2) pieces each of recent 1x1 pictures of authorized signatories
• Two (2) acceptable IDs of the authorized signatories opening the account
• General Information Sheet
• License to do business in the Philippines or Certificate of Exemption, if foreign entity