Setup DKIM & DMARC for Microsoft 365

I need assistance configuring DKIM and DMARC records for my primary business domain hosted with a single email account on Microsoft 365. Initially, I want the DMARC policy to monitor emails that fail DMARC checks. This requires expertise in email security, DNS record management, and Microsoft 365 email hosting. Your guidance in ensuring proper setup and implementation is essential. Domain is registerer with Squarespace.