Set up automatic replies

I will be out of office next week for parental leave. Set an automatic reply on my account from Monday July 20 through Friday July 24 that says I am on parental leave, names Priya in procurement and Alan in finance as contacts for urgent issues with their emails, and instructs requesters to resend any contract for immediate attention. Enable it for internal and external senders.

Before I activate my out-of-office, make the auto-reply clear for vendors who handle invoices: state dates I'm away, list three alternate contacts with role and email, tell vendors how invoices will be handled and when they can expect a response, and flag any wording that could trigger security concerns or disclose unnecessary details.

I'm off for two weeks starting Monday and worried vendors will send contract questions that need immediate answers. Who should I name as alternates for procurement and finance, what two sentences ensure vendors know whom to contact for invoices versus contracts, and what timeframe should I promise for responses to avoid false expectations?

Each time I set an automatic reply people send the same urgent questions to colleagues who then escalate to me. What two changes to my OOO template and two coordination habits with backups will reduce escalation and keep service steady while I'm away?