1. Setup the delivery dates plugin for all products ?
Ans: To configure the the delivery date plugin for all products you need to go into your Admin Panel > Delivery Dates Dashboards > You can enable and disable delivery dates and days
2. Setup the delivery dates plugin for Single Products ?
Ans: To configure the the delivery date plugin for all products you need to go into your product editor > Delivery date metabox > Click on override global setting and select days or dates.
3. Does plugin require any special Permission?
Ans: No.
4. Does plugin depend on any another plugin?
Ans: Yes, Woocommerce plugin is required