How to Setup Schedule Ship date based on Schedule Arrival date and Transit Time

This is short post , supported with you tube demo about
1.How to Setup Transit Time
2.How system calculate Schedule Ship date based onTransit Time and Schedule Arrival Date if Order Date Type = 'Arrival'.
3.Impact of Change of Shipping Method on calculation of Schedule Ship Date.
4.Impact of Latest Acceptable date.
4.How we set System Parameter for Latest Acceptable date.